The change log can be found here (search for “shelly”): Full changelog for Home Assistant Core 2024.5 - Home Assistant.
I would provide the logs & debugging information (see post above) in a new issue on GitHub.
Or try diving a little deeper by trying some of these debugging techniques:
2024.5+: Tracking down instability issues caused by integrations.
Finally, reverting to the previous version / restoring a backup should work.