Hello @Hugo, thank you for the detailed explanation of the issue and sorry for the late reply.
Would it be possible for you to try the following scenario:
- move your FontBase root folder to a local (non-network) drive;
- make local (non-network) copies of font folders;
- add them to FontBase as watched folders;
- see if the issue still persists (e.g. after restart);
This will help us understand if the problem is with FontBase itself or whether other factors are at play here.
Thank you again,
Yuriy
FontBase Dev Team