I just recently switched to MacOs (Monterey) and I am struggling with the behavior of Dropbox. I have pinned some of the sub-folders that I use the most to the favorites sidebar in Finder. However I noticed that files will not sync if I drop them into those folders. They will sync fine when I go to 'Dropbox' in 'places' and navigate to the folder there. Same is true vice versa: New files in the dropbox folder will not sync to sub-folders pinned to sidebar.
Is this a known behavior? On my PC I have not encountered this problem.
Thanks in advance for any help