Thanks for the update, Matthew! It looks like ExplorerPatcher was causing the problem. Uninstalling it brought your Widgets back, and reinstalling it caused the issue to return, just as others have reported.
This problem has affected many users after recent updates. The latest ExplorerPatcher versions seem to conflict with Windows 11 Widgets, especially the weather feature. For now, the best option is to keep ExplorerPatcher uninstalled if you want your Widgets to work properly.
If you try ExplorerPatcher again in the future, check your Widgets right after installing. If the problem returns, uninstalling it should fix it. The ExplorerPatcher team and users are discussing this on GitHub, so keep an eye on their page for updates or fixes
Thanks again for working through all those steps and for sharing your findings. It looks like you’ve pinpointed the issue, and your troubleshooting will definitely help others who run into the same problem.