When I batch edit more than a couple entries, RDM completely hangs for multiple minutes usually ending in a crash, "unable to validate entry via server", or "unable to connect to the server. Connection timed out." (System.Threading.Tasks.TaskCanceledException: The request was canceled due to the configured HttpClient.Timeout of 100 seconds elapsing.).
Single entry editing is fine. I just edited 4 entries and it took a couple minutes but it worked.
Things changed in the batch edit : tags or credentials.
Edit: Tested on flatpak and rpm release 2026.3.05 (wayland and x11) and rpm 2026.2.2.2
I wanted to rule out any network issue so I ran the same tests on the same machine on a windows container and everything worked flawlessly on the windows version.