[BUG] Discussions and Threads not showing in Safari

Description:

Discussions and Threads not showing when opened from the channel in Safari.

Steps to reproduce:

1. Go to https://open.rocket.chat
2. Open any channel which contains discussions or threads.
3. Open the discussions or threads(at the top right toolbar).

Expected behavior:

Discussions and threads in the channel should appear in Safari, Chrome, Firefox, and other browsers.

Actual behavior:

Discussions and threads don't appear in Safari. But appear in Chrome, Firefox.
Safari - left side, Chrome - right side

Server Setup #Information:

• Version of Rocket.Chat Server: 3.11.0-rc.2
• Operating System: macOS Catalina 10.15.5
• Deployment Method:
• Number of Running Instances: -
• DB Replicaset Oplog: -
• NodeJS Version: -
• MongoDB Version: -

Client Setup Information

• Desktop App or Browser Version: 3.11.0-rc.2
• Operating System: macOS Catalina 10.15.5

Additional context

Relevant logs:

Start by reproducing the issue at open.rocket.chat in Safari with a channel containing discussions or threads, then compare the same channel in Chrome or Firefox. Done means discussions and threads opened from the channel toolbar appear correctly in Safari as they do in the other browsers.