I recently updated my Dropbox library to the new structure (I believe) required by Apple and this has caused a breaking issue on Lightroom Classic on Mac because of the path structures have changed
Old:
/Users/cd/Dropbox/Pictures/Lightroom/2023/2023-12-16
New:
/Users/cd/Library/CloudStorage/Dropbox/Pictures/Lightroom/2023/2023-12-16
Due to Lightroom having issues with this, my images are being split into two different folders with in the _app's folder_ structure (it used to mirror the Finder's but now there are duplicates for every item created AFTER the update.
There is a 'fix' for this called the 'capitalisation bug fix' which should work but I wanted to flag on Dropbox and see if anyone here has run into this issue as I think more than just me will have their catalogs in Dropbox.
Here's my discussion on this subject on the Adobe side
https://community.adobe.com/t5/lightroom-classic-discussions/stacking-not-working-with-edited-psd-tifs/m-p/14312062