Nextcloud Server Locks up Slow when Collabora Server is offline

[AndyXheli]

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

1. Turn off Callobora Server VM for updates
2. After a while the Nextcloud server slows down and locks up

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Client details:

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]
• Device: [e.g. iPhone6, desktop]

Server details

Operating system:
Ubuntu 20.0.4
Web server:
Apache
Database:
MariaDb
PHP version:
8.0
Nextcloud version:
NC 24.0.6 & NC 25 RC3
Version of the richdocuments app
6.2.0 & 7.0.0-beta.2
Version of Collabora Online
Collabora Office 22.05.6.3

Logs

Nextcloud log (data/nextcloud.log)

Insert your Nextcloud log here

Browser log

Insert your browser log here, this could for example include:

a) The javascript console log
b) The network log
c) ...

[mritzmann]

Duplicate of #2722

[joshtrichards]

@mritzmann Other way around, but yeah :)

[juliusknorr]

This was fixed by #3749 and #3762 but unfortunately rather complex so not backported and only available with Nextcloud 30.