Keyword Indexing gets stuck when scanning empty .Trashes folder on Mac

On two different Macbooks running two different OS versions (Big Sur & Ventura) and Bridge vs 13.0.3.693 swapping a USB drive of media between them, neither seems to be able to compile a keyword search index of the whole USB drive. They both get stuck trying to index an empty .Trashes folder on the USB drive. I have unhidden the .Trashes folder afterwards and it is empty, so what is the indexing process getting stuck on?