diff --git a/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.hbs b/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.hbs
index 8b547fd0bfd..848800ff3b8 100644
--- a/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.hbs
+++ b/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.hbs
@@ -1,23 +1,30 @@
-{{#if this.shouldDisplay}}
-  <div class="presence-users">
-    <div class="presence-avatars">
-      {{#each this.presenceUsers as |user|}}
-        {{avatar user imageSize="small"}}
-      {{/each}}
+<div
+  {{did-insert this.setupChannels}}
+  {{did-update this.setupChannels @model.reply @model.whisper this.state}}
+>
+  {{#if this.shouldDisplay}}
+    <div class="presence-users">
+      <div class="presence-avatars">
+        {{#each this.users as |user|}}
+          <UserLink @user={{user}}>
+            {{avatar user imageSize="small"}}
+          </UserLink>
+        {{/each}}
+      </div>
+      <span class="presence-text">
+        <span class="description">
+          {{~#if this.isReply~}}
+            {{i18n "presence.replying" count=this.users.length}}
+          {{~else~}}
+            {{i18n "presence.editing" count=this.users.length}}
+          {{~/if~}}
+        </span>
+        <span class="wave">
+          <span class="dot">.</span>
+          <span class="dot">.</span>
+          <span class="dot">.</span>
+        </span>
+      </span>
     </div>
-    <span class="presence-text">
-      <span class="description">
-        {{~#if this.isReply~}}
-          {{i18n "presence.replying" count=this.presenceUsers.length}}
-        {{~else~}}
-          {{i18n "presence.editing" count=this.presenceUsers.length}}
-        {{~/if~}}
-      </span>
-      <span class="wave">
-        <span class="dot">.</span>
-        <span class="dot">.</span>
-        <span class="dot">.</span>
-      </span>
-    </span>
-  </div>
-{{/if}}
\ No newline at end of file
+  {{/if}}
+</div>
\ No newline at end of file
diff --git a/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.js b/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.js
index 81ec9c191c7..80feba20f9d 100644
--- a/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.js
+++ b/plugins/discourse-presence/assets/javascripts/discourse/components/composer-presence-display.js
@@ -1,32 +1,30 @@
-import Component from "@ember/component";
-import { equal, gt, readOnly, union } from "@ember/object/computed";
+import Component from "@glimmer/component";
+import { tracked } from "@glimmer/tracking";
+import { action } from "@ember/object";
 import { service } from "@ember/service";
-import { tagName } from "@ember-decorators/component";
-import { observes, on } from "@ember-decorators/object";
-import discourseComputed from "discourse-common/utils/decorators";
 
-@tagName("")
-export default class ComposerPresenceDisplay extends Component {
+export default class ComposerPresenceDisplayComponent extends Component {
   @service presence;
   @service composerPresenceManager;
+  @service currentUser;
+  @service siteSettings;
 
-  @equal("state", "reply") isReply;
-  @equal("state", "edit") isEdit;
-  @equal("state", "whisper") isWhisper;
-  @union("replyChannel.users", "whisperChannel.users") replyingUsers;
-  @readOnly("editChannel.users") editingUsers;
-  @gt("presenceUsers.length", 0) shouldDisplay;
+  @tracked replyChannel;
+  @tracked whisperChannel;
+  @tracked editChannel;
 
-  @discourseComputed(
-    "model.replyingToTopic",
-    "model.editingPost",
-    "model.whisper",
-    "model.composerOpened"
-  )
-  state(replyingToTopic, editingPost, whisper, composerOpen) {
-    if (!composerOpen) {
-      return;
-    } else if (editingPost) {
+  get isReply() {
+    return this.state === "reply" || this.state === "whisper";
+  }
+
+  get isEdit() {
+    return this.state === "edit";
+  }
+
+  get state() {
+    const { editingPost, whisper, replyingToTopic } = this.args.model;
+
+    if (editingPost) {
       return "edit";
     } else if (whisper) {
       return "whisper";
@@ -35,77 +33,105 @@ export default class ComposerPresenceDisplay extends Component {
     }
   }
 
-  @discourseComputed("model.topic.id", "isReply", "isWhisper")
-  replyChannelName(topicId, isReply, isWhisper) {
-    if (topicId && (isReply || isWhisper)) {
+  get replyChannelName() {
+    const topicId = this.args.model?.topic?.id;
+    if (topicId && this.isReply) {
       return `/discourse-presence/reply/${topicId}`;
     }
   }
 
-  @discourseComputed("model.topic.id", "isReply", "isWhisper")
-  whisperChannelName(topicId, isReply, isWhisper) {
-    if (topicId && this.currentUser.whisperer && (isReply || isWhisper)) {
+  get whisperChannelName() {
+    const topicId = this.args.model?.topic?.id;
+    if (topicId && this.isReply && this.currentUser.whisperer) {
       return `/discourse-presence/whisper/${topicId}`;
     }
   }
 
-  @discourseComputed("isEdit", "model.post.id")
-  editChannelName(isEdit, postId) {
-    if (isEdit) {
+  get editChannelName() {
+    const postId = this.args.model?.post?.id;
+    if (postId && this.isEdit) {
       return `/discourse-presence/edit/${postId}`;
     }
   }
 
-  _setupChannel(channelKey, name) {
-    if (this[channelKey]?.name !== name) {
-      this[channelKey]?.unsubscribe();
+  get replyUsers() {
+    return this.replyChannel?.users || [];
+  }
+
+  get whisperUsers() {
+    return this.whisperChannel?.users || [];
+  }
+
+  get replyingUsers() {
+    return [...this.replyUsers, ...this.whisperUsers];
+  }
+
+  get editingUsers() {
+    return this.editChannel?.users || [];
+  }
+
+  get users() {
+    const users = this.isEdit ? this.editingUsers : this.replyingUsers;
+    return users
+      .filter((u) => u.id !== this.currentUser.id)
+      .slice(0, this.siteSettings.presence_max_users_shown);
+  }
+
+  get shouldDisplay() {
+    return this.users.length > 0;
+  }
+
+  @action
+  setupChannels() {
+    this.setupReplyChannel();
+    this.setupWhisperChannel();
+    this.setupEditChannel();
+    this.notifyState();
+  }
+
+  setupReplyChannel() {
+    this.setupChannel("replyChannel", this.replyChannelName);
+  }
+
+  setupWhisperChannel() {
+    if (this.currentUser.staff) {
+      this.setupChannel("whisperChannel", this.whisperChannelName);
+    }
+  }
+
+  setupEditChannel() {
+    this.setupChannel("editChannel", this.editChannelName);
+  }
+
+  setupChannel(key, name) {
+    if (this[key]?.name !== name) {
+      this[key]?.unsubscribe();
       if (name) {
-        this.set(channelKey, this.presence.getChannel(name));
-        this[channelKey].subscribe();
-      } else if (this[channelKey]) {
-        this.set(channelKey, null);
+        this[key] = this.presence.getChannel(name);
+        this[key].subscribe();
       }
     }
   }
 
-  @observes("replyChannelName", "whisperChannelName", "editChannelName")
-  _setupChannels() {
-    this._setupChannel("replyChannel", this.replyChannelName);
-    this._setupChannel("whisperChannel", this.whisperChannelName);
-    this._setupChannel("editChannel", this.editChannelName);
-  }
+  notifyState() {
+    const { reply, post, topic } = this.args.model;
+    const raw = this.isEdit ? post?.raw || "" : "";
+    const entity = this.isEdit ? post : topic;
 
-  _cleanupChannels() {
-    this._setupChannel("replyChannel", null);
-    this._setupChannel("whisperChannel", null);
-    this._setupChannel("editChannel", null);
-  }
-
-  @discourseComputed("isReply", "replyingUsers.[]", "editingUsers.[]")
-  presenceUsers(isReply, replyingUsers, editingUsers) {
-    const users = isReply ? replyingUsers : editingUsers;
-    return users
-      ?.filter((u) => u.id !== this.currentUser.id)
-      ?.slice(0, this.siteSettings.presence_max_users_shown);
-  }
-
-  @on("didInsertElement")
-  subscribe() {
-    this._setupChannels();
-  }
-
-  @observes("model.reply", "state", "model.post.id", "model.topic.id")
-  _contentChanged() {
-    if (this.model.reply === "") {
-      return;
+    if (reply !== raw) {
+      this.composerPresenceManager.notifyState(this.state, entity?.id);
     }
-    const entity = this.state === "edit" ? this.model?.post : this.model?.topic;
-    this.composerPresenceManager.notifyState(this.state, entity?.id);
   }
 
-  @on("willDestroyElement")
-  closeComposer() {
-    this._cleanupChannels();
+  willDestroy() {
+    super.willDestroy(...arguments);
+    this.unsubscribeFromChannels();
     this.composerPresenceManager.leave();
   }
+
+  unsubscribeFromChannels() {
+    this.replyChannel?.unsubscribe();
+    this.whisperChannel?.unsubscribe();
+    this.editChannel?.unsubscribe();
+  }
 }
diff --git a/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.hbs b/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.hbs
index 04fdfffd0f0..3da513e1bc4 100644
--- a/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.hbs
+++ b/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.hbs
@@ -1,21 +1,26 @@
-{{#if this.shouldDisplay}}
-  <div class="presence-users">
-    <div class="presence-avatars">
-      {{#each this.users as |user|}}
-        <UserLink @user={{user}}>
-          {{avatar user imageSize="small"}}
-        </UserLink>
-      {{/each}}
+<div
+  {{did-insert this.setupChannels}}
+  {{did-update this.setupChannels @topic.id}}
+>
+  {{#if this.shouldDisplay}}
+    <div class="presence-users">
+      <div class="presence-avatars">
+        {{#each this.users as |user|}}
+          <UserLink @user={{user}}>
+            {{avatar user imageSize="small"}}
+          </UserLink>
+        {{/each}}
+      </div>
+      <span class="presence-text">
+        <span class="description">
+          {{i18n "presence.replying_to_topic" count=this.users.length}}
+        </span>
+        <span class="wave">
+          <span class="dot">.</span>
+          <span class="dot">.</span>
+          <span class="dot">.</span>
+        </span>
+      </span>
     </div>
-    <span class="presence-text">
-      <span class="description">
-        {{i18n "presence.replying_to_topic" count=this.users.length}}
-      </span>
-      <span class="wave">
-        <span class="dot">.</span>
-        <span class="dot">.</span>
-        <span class="dot">.</span>
-      </span>
-    </span>
-  </div>
-{{/if}}
\ No newline at end of file
+  {{/if}}
+</div>
\ No newline at end of file
diff --git a/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.js b/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.js
index 4cd60b1674f..1018d4b403a 100644
--- a/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.js
+++ b/plugins/discourse-presence/assets/javascripts/discourse/components/topic-presence-display.js
@@ -1,64 +1,72 @@
-import Component from "@ember/component";
-import { gt, union } from "@ember/object/computed";
+import Component from "@glimmer/component";
+import { tracked } from "@glimmer/tracking";
+import { action } from "@ember/object";
 import { service } from "@ember/service";
-import { on } from "@ember-decorators/object";
-import discourseComputed from "discourse-common/utils/decorators";
 
-export default class TopicPresenceDisplay extends Component {
+export default class TopicPresenceDisplayComponent extends Component {
   @service presence;
+  @service currentUser;
 
-  topic = null;
-  replyChannel = null;
-  whisperChannel = null;
+  @tracked replyChannel;
+  @tracked whisperChannel;
 
-  @union("replyUsers", "whisperUsers") users;
-  @gt("users.length", 0) shouldDisplay;
-
-  @discourseComputed("replyChannel.users.[]")
-  replyUsers(users) {
-    return users?.filter((u) => u.id !== this.currentUser.id);
+  get replyChannelName() {
+    return `/discourse-presence/reply/${this.args.topic.id}`;
   }
 
-  @discourseComputed("whisperChannel.users.[]")
-  whisperUsers(users) {
-    return users?.filter((u) => u.id !== this.currentUser.id);
+  get whisperChannelName() {
+    return `/discourse-presence/whisper/${this.args.topic.id}`;
   }
 
-  @discourseComputed("topic.id")
-  replyChannelName(id) {
-    return `/discourse-presence/reply/${id}`;
+  get replyUsers() {
+    return this.replyChannel?.users || [];
   }
 
-  @discourseComputed("topic.id")
-  whisperChannelName(id) {
-    return `/discourse-presence/whisper/${id}`;
+  get whisperUsers() {
+    return this.whisperChannel?.users || [];
   }
 
-  didReceiveAttrs() {
-    super.didReceiveAttrs(...arguments);
-
-    if (this.replyChannel?.name !== this.replyChannelName) {
-      this.replyChannel?.unsubscribe();
-      this.set("replyChannel", this.presence.getChannel(this.replyChannelName));
-      this.replyChannel.subscribe();
-    }
-
-    if (
-      this.currentUser.staff &&
-      this.whisperChannel?.name !== this.whisperChannelName
-    ) {
-      this.whisperChannel?.unsubscribe();
-      this.set(
-        "whisperChannel",
-        this.presence.getChannel(this.whisperChannelName)
-      );
-      this.whisperChannel.subscribe();
-    }
+  get users() {
+    return [...this.replyUsers, ...this.whisperUsers].filter(
+      (u) => u.id !== this.currentUser.id
+    );
   }
 
-  @on("willDestroyElement")
-  _destroyed() {
+  get shouldDisplay() {
+    return this.users.length > 0;
+  }
+
+  @action
+  setupChannels() {
+    this.setupReplyChannel();
+    this.setupWhisperChannel();
+  }
+
+  willDestroy() {
+    super.willDestroy(...arguments);
+    this.unsubscribeFromChannels();
+  }
+
+  unsubscribeFromChannels() {
     this.replyChannel?.unsubscribe();
     this.whisperChannel?.unsubscribe();
   }
+
+  setupReplyChannel() {
+    if (this.replyChannel?.name !== this.replyChannelName) {
+      this.replyChannel?.unsubscribe();
+      this.replyChannel = this.presence.getChannel(this.replyChannelName);
+      this.replyChannel.subscribe();
+    }
+  }
+
+  setupWhisperChannel() {
+    if (this.currentUser.staff) {
+      if (this.whisperChannel?.name !== this.whisperChannelName) {
+        this.whisperChannel?.unsubscribe();
+        this.whisperChannel = this.presence.getChannel(this.whisperChannelName);
+        this.whisperChannel.subscribe();
+      }
+    }
+  }
 }