Could you give me some hints on how to debug which rule is causing that problem.
I would rather find the root cause then downgrading to OH4 and restoring the configuration.
Have you tried restarting OH? After a restart does the rules page become unresponsive immediately or does OH need to run for a bit before it becomes unresponsive? Are there any other pages that are unresponsive in MainUI?
Do you see anything interesting in the logs?
I’m skeptical that an individual rule can cause this problem but can’t rule it out.