Ugh I guess we can rule out the Linux Kernel version, at least we know that's not the issue.

I'm not familiar with Bazzite but I think(?) it grabs and updates apps through Flathub (per https://docs.bazzite.gg/Installing_and_Managing_Software/Flatpak/) so another idea is trying the qBittorrent appimage from the qBittorrent devs, instead of the version that qBittorrent binary Bazzite gives you, just to test & see if there is any difference. That should at least rule out some specific issue with the qBittorrent binary in Flathub. (In theory it should work the same)

Might be out of ideas beyond that :/ You can try posting in qBittorrent's Github, maybe it's the same bug some other people are running into.