diff --git a/src/main.js b/src/main.js
index c21ed9643..9dec9551f 100644
--- a/src/main.js
+++ b/src/main.js
@@ -71,7 +71,7 @@ Vue.use(VueObserveVisibility)
 Vue.use(VueShortKey, { prevent: ['input', 'textarea', 'div'] })
 Vue.use(vOutsideEvents)
 
-export default new Vue({
+const instance = new Vue({
 	el: '#content',
 	store,
 	router,
@@ -155,3 +155,11 @@ Sidebar.prototype.close = function() {
 Object.assign(window.OCA.Files, {
 	Sidebar: new Sidebar(),
 })
+
+// make the instance available to global components that might run on the same page
+if (!window.OCA.Talk) {
+	window.OCA.Talk = {}
+}
+OCA.Talk.instance = instance
+
+export default instance
diff --git a/src/views/RoomSelector.vue b/src/views/RoomSelector.vue
index db0796c19..ec9dca165 100644
--- a/src/views/RoomSelector.vue
+++ b/src/views/RoomSelector.vue
@@ -87,6 +87,7 @@ export default {
 		return {
 			rooms: [],
 			selectedRoom: null,
+			currentRoom: null,
 			loading: true,
 		}
 	},
@@ -94,6 +95,7 @@ export default {
 		availableRooms() {
 			return this.rooms.filter((room) => {
 				return room.type !== CONVERSATION.TYPE.CHANGELOG
+					&& (!this.currentRoom || this.currentRoom !== room.token)
 					&& (!this.showPostableOnly || room.readOnly === CONVERSATION.STATE.READ_WRITE)
 					&& room.objectType !== 'file'
 					&& room.objectType !== 'share:password'
@@ -102,6 +104,11 @@ export default {
 	},
 	beforeMount() {
 		this.fetchRooms()
+
+		const $store = OCA.Talk?.instance?.$store
+		if ($store) {
+			this.currentRoom = $store.getters.getToken()
+		}
 	},
 	methods: {
 		fetchRooms() {