oddly enough i can reproduce it on both pc's albeit the coloring inside the folder portal is slightly different. its a darker shade of blue with a reddish font on my other pc. whereas the blue is a bit lighter with a grayish font on my main pc.
either way its different in the folder portal than everywhere else on both pcs
winversion is 19042.964
fences version is 18.104.22.168
using dark mode
no windowsblinds or font modification, using the default that windows ships with. (no idea how to even change it but if theres a way to blanket redo the font/highlight coloring somewhere that is likely a good place to start)
worth mentioning this is limited to folder portals with fences as I can try to rename the files inside explorer in the actual folder they reside in and its normal/fine.
same with anything on the desktop inside other fences that ARENT folder portals.
also tried creating another folder portal to a different folder on a different drive altogether. Same result.