Just out of interest sake, some wildcards work but I can’t see a pattern
If you point to “Core Data” this folder works:
icons/creatures/invertebrates/*.webp
this doesn’t
cards/backs/*.webp
Not spaces, not length, not which database, no idea so far (Not dashes in the filenames, both these examples have the same style filenames), both folders contain same types of files and both contain more than 1 file