Chat resets to the bottom when scrolling up

[r1ks-iwnl]

Testmerges

#4866, #4934, #4960, #4986, #5007, #4828

Round ID

No response

Description of the bug

The chat resets back to the bottom of the history when trying to scroll up if a lot of messages are being set rapidly so i have to move my camera somewhere quieter to do it. The chat doesn't reset if it's already scrolled up.

What's the difference with what should have happened?

The chat scrolls up uninterrupted.

How do we reproduce this bug?

1.Be in a place where messages are sent rapidly(active frontline)
2.Scroll the chat up

Issue Bingo

• Issue could be reproduced at least once
• Issue happened in a recent (less than 7 days ago) round
• Couldn't find an existing issue about this (https://github.com/cmss13-devs/cmss13/issues)

[ItsVyzo]

tested on live - does not work