Mouse cursor is too small on 4k display

[silmaril42]

Describe the bug
Display is a 4k TV.
The UI is scaled very nicely (same as in the browser).
When the mouse cursor is inside the Jellyfin Media Player window (or in fullscreen), the cursor changes to another form (simple arrow) and becomes very small (about a quarter of the original size in width and height).
This makes it very hard to locate the cursor and use the UI.

Expected behavior
The mouse cursor configured in the system should be used inside the application, too.
It should not change form or size.

Desktop

• OS: Linux Mint 21.3 with Cinnamon Desktop 6.0.4
• Screen resolution: 3840 x 2160
• Installation Method: Flatpak
• App version: 1.11.1

[rodofiron]

I also have this issue but believe it is a problem with all Flatpaks on Cinnamon (I'm also running Mint 21.3/Cinnamon), especially Qt applications, because it happens system-wide across all my Flatpaks. I've managed to get my mouse theme working but the size of the pointer is still very small. The upgrade instructions for Mint 22 has a section on how to resolve this on 22 but I don't know if it works on 21.3, as the method I used was different and as I said, only partially successful.

https://www.linuxmint.com/rel_wilma.php

scroll down to "Mouse Pointer theme in root, Qt and Flatpak applications"

[silmaril42]

Thanks @rodofiron for this pointer!

On my mediacenter system, most Flatpaks show the oversized mouse pointer I have configured in Cinnamon (the only exception being Widelands, which uses it's own mouse pointers).

It seems JMP is doing something in a different way and does not even try to use the system mouse pointer.

Giving it xdg-data/icons:ro privileges didn't change that.

On my desktop with Mint 22, JMP uses the system mouse pointers without any additional setup.

I guess I'll try updating my mediacenter PC to Mint 22 as well and see if that changes anything...

[silmaril42]

I upgraded the system to Linux Mint 22. The mouse pointer behaviour didn't change.