Issues with sidebar disappearing after upgrading to 3.9.0 Server

Description

Server Setup Information

  • Version of Rocket.Chat Server: 3.9.0
  • Operating System: CentOS 7.8
  • Deployment Method: Manual Install
  • Number of Running Instances: 1
  • DB Replicaset Oplog:
  • NodeJS Version: 12.8.4
  • MongoDB Version: 4.0.19
  • Proxy: no
  • Firewalls involved: no

Any additional Information

Dear all,

today I wanted to upgrade from RC-Server 3.6.1 to 3.9.0. This worked after upgrading Node to 12.8.4 via sudo n install 12.8.4. However issues with the sidebar occured in the client and the webinterface. Everytime you scroll down to the bottom of the direct messages the whole sidebar disappears and also all User interface buttons. After reloaden the client the buttons reappear again, but scrolling down starts the issue again. Does anybody see this issue, too? Do you know where to download an older release? I would give 3.8.1 a try but can only download the source code from github or the latest release from the website.

Thank you!
Best regards