I've noted that the Timeline view places DNG files created starting from original photos in the wrong day.
Example: photos taken on May 10. On May 11 I created a few DNGs (by using Capture One 22). The DNG are shown in the May 11 timeline instead of May 10 (as the original files). Looking at the filesystem/EXIF data (extracting them with exiftool):
PS. PSU uses XMP as leading. Unfortunately not all tools out there write consistent metadata at all levels. If your XMP is out of sync with our other metadata (like Exif) then you can get unexpected result.
PSU can fix sunc metadata inconsistencies for you. Use right click -> Metadata -> Convert Metadata to XMP for that.
This is a user-to-user forum. If you need product support then please send a message