Debian 11 is a giant shitshow. Floppy controller doesnt works, gimp crashes from copypaste, kpaint lacks icons, pitivi crashes on start, kdenlive crashes, pcmanfm crashes from cutting and pasting...
Are you using KDE ? if so - Do these issues also occur in XFCE ? If like that then I guess it is time to bail from the Debian ecosystem. Debian is just too far behind these days
I recompiling a newer kernel in hopes they have fixed the floppy issues. It seems there are no real testers any more, even most of the basic stuff just simply doesnt works properly.
You don't have to, all hardware up to like ~2013 are best to be flashed from a floppy disk after booting in real mode (or thats the only way to even do it).