New messages don't scroll into view consistently

[rolandixor]

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Steps to reproduce

1. Open a chat.
2. Exchange some messages.
3. On mobile and desktop, new messages don't always cause the chat to scroll to the bottom, or even trigger the "scroll to bottom" button.

Expected behaviour

New messages come into view.

Actual behaviour

Messages are added to the chat, but the chat doesn't move.

Talk app

Talk app version: 20.0.2

Custom Signaling server configured: no

Custom TURN server configured: no

Custom STUN server configured: no

Browser

Microphone available: yes

Camera available: yes

Operating system: Ubuntu, Android

Browser name: Floorp, Mobile App

Browser version: 124/125/...

Browser log

``` Insert your browser log here, this could for example include: a) The javascript console log b) The network log c) ... ```

Server configuration

Operating system: Ubuntu

Nextcloud Version: 30.0.1 (Snap)

If you have access to your command line run e.g.:
sudo -u www-data php occ app:list
from within your server installation folder

Nextcloud configuration:

If you have access to your command line run e.g.:
sudo -u www-data php occ config:list system
from within your Nextcloud installation folder

Server log (data/nextcloud.log)

Insert your server log here

[nickvergessen]

Fixed by #14266 most likely