I use Steam on Fedora as well and I notice a lot of jank with the Steam client (Nvidia 1080ti). Dropdown menus popping through windows, sound may or may not work for videos, freezing, etc. It's usable but it's not very pleasant.
Just for GPU comparison I'm on an AMD RX card so it could be an Nvidia issue which is known to be jank on Linux.
The client seems to be very suseptible to I/O stalls and even randomly just locks up for a few seconds by itself every once in a while on my end for some reason. That in itself would be fine if it wouldn't also directly affect games launched through Steam.
I also use Steam on Fedora, and I've not had any issues with Stardew Valley, Factorio, Celeste, N++, Undertale, and others. I remember having a brief issue with Portal, but I was able to resolve it. Overall, I've had a good experience.
It seems to work perfectly for some people. I’ve regularly had issues with the client not rendering at all, freezing, and crashing on Pop_OS 22.04 LTS with an nvidia GTX 1660ti.