I also have the same, a Library folder with no access appeared in my Documents folder, the creation date was 3rd March at 13.51 - coincidentally, this was the exact time that I installed the latest Apple Security Update for 10.14.6 (Mojave), so I believe that was responsible for creating it.
It appears to be an empty folder, but as I can't open it I can't be 100% sure.
Hopefully, this will be deleted by Apple next time they do a Security Update on Mojave. Makes me a bit nervous, though, as it could be used by malware? Maybe it was supposed to be a hidden folder? Either way, it appeared straight after installing the latest Security Update (2021-003, I believe)
I don't believe in this case Adobe are responsible, although they are responsible for a lot of other mistakes! This all points to Apple, or so I believe.