I've used ffs in the past and don't recall this issue. Now using latest version (11.22), I see a number of inconsistencies in the "relative path" display:
See image here:
On left side, the "site-packages python-lib" is squashed, and is showing the later folder first (site-packages) which is quite disorientating. Sometimes the path takes up it's own line and sometimes it doesn't?
Maybe this layout is a new feature? Is there a way to simply show the path on its own single line consistently?
Since you asked, I maintain a patch that adds two options to the list of views: Traditional, and Trad. Relative. To use this patch, you have to be able to compile FreeFileSync from source. link to patch
Why for the first folder shown it does not have it's own line (python\lib\site-packages) (on the left side), but for the others, they have their own line?