Upgrading OpenHAB 3.2 to 3.3: Missing UI Items

I recently upgraded my OpenHAB setup from version 3.2 to 3.3, and I’m encountering an issue where all my UI-created items are missing. Only two items, which are text files, remain visible. I’ve waited over 15 minutes for any changes, but nothing seems to resolve the issue. The logs indicate warnings about missing binding add-ons and UI components, such as ‘serial1’, ‘plex1’, ‘horizon’, ‘classic’, and ‘paper’. I’m concerned that these missing components might be causing the items not to load properly. Has anyone else experienced similar issues after an upgrade? Any guidance on how to restore or reconfigure these items would be greatly appreciated.