I am on Fedora 42 Workstation, and I also have this problem. When launching the .rpm from terminal ( with "Cider") I get this error message:
Gtk-ERROR **: 17:50:31.826: GTK 2/3 symbols detected. Using GTK 2/3 and GTK 4 in the same process is not supported
The .appimage doesn't launch either
I installed Ubuntu 24.10 in a VM and It seemed to work fine on it with the .deb version