Regression: Prevent Message Attachment rendering (#20860)

app/ui-utils/client/lib/Layout.js

@@ -1,14 +1,17 @@
 import { Tracker } from 'meteor/tracker';
 import { FlowRouter } from 'meteor/kadira:flow-router';
+import { ReactiveVar } from 'meteor/reactive-var';
 
 export const Layout = new class RocketChatLayout {
 	constructor() {
+		this.embedded = new ReactiveVar();
 		Tracker.autorun(() => {
 			this.layout = FlowRouter.getQueryParam('layout');
+			this.embedded.set(this.layout === 'embedded');
 		});
 	}
 
 	isEmbedded() {
-		return FlowRouter.getQueryParam('layout') === 'embedded';
+		return this.embedded.get();
 	}
 }();

app/ui-utils/client/lib/messageContext.js

@@ -1,6 +1,7 @@
 import { Meteor } from 'meteor/meteor';
 import { Template } from 'meteor/templating';
 import { FlowRouter } from 'meteor/kadira:flow-router';
+import { Tracker } from 'meteor/tracker';
 
 import { Subscriptions, Rooms, Users } from '../../../models/client';
 import { hasPermission } from '../../../authorization/client';
@@ -17,7 +18,7 @@ const fields = { name: 1, username: 1, 'settings.preferences.showMessageInMainTh
 export function messageContext({ rid } = Template.instance()) {
 	const uid = Meteor.userId();
 	const user = Users.findOne({ _id: uid }, { fields }) || {};
-	const instace = Template.instance();
+	const instance = Template.instance();
 	const openThread = (e) => {
 		const { rid, mid, tmid } = e.currentTarget.dataset;
 		const room = Rooms.findOne({ _id: rid });
@@ -40,7 +41,7 @@ export function messageContext({ rid } = Template.instance()) {
 		});
 	} : (msg, e) => {
 		const { actionlink } = e.currentTarget.dataset;
-		actionLinks.run(actionlink, msg._id, instace, (err) => {
+		actionLinks.run(actionlink, msg._id, instance, (err) => {
 			if (err) {
 				handleError(err);
 			}
@@ -60,13 +61,12 @@ export function messageContext({ rid } = Template.instance()) {
 
 	return {
 		u: user,
-		room: Rooms.findOne({ _id: rid }, {
-			reactive: false,
+		room: Tracker.nonreactive(() => Rooms.findOne({ _id: rid }, {
 			fields: {
 				_updatedAt: 0,
 				lastMessage: 0,
 			},
-		}),
+		})),
 		subscription: Subscriptions.findOne({ rid }, {
 			fields: {
 				name: 1,