No scaling of the mouse

[pc-stuff-is-troublesome-at-times]

Describe the bug
No scaling of the mouse in Linux Mint 22.2 with the Flatpak version with 200% UI scaling.
I use two displays, one 3k and one 4k, and scale the resolution by 200%. In both instances the mouse is nearly visible and very small. Additionally it is not the mouse theme Bibata-Modern-Classic I use for the whole system but a different looking mouse.
The 3k display is a laptop and I can use the client with a bit of a inconvenience, but the 4k display is a TV and I cannot see the mouse at all.

Steps to reproduce the behavior:

1. Go into Jellyfin Media Player on a big display with UI scaling an try to find the mouse.

Expected behavior
The same size and apperance of my mouse I use on my whole system.