Hello Rui,
I suspect the property handler to mess up the tags when I edit tags within windows explorer.
A typical outcome after the editing (I typically delete a tag and add a new tag then save) is:
"ASOPS; Terahertz; Time-Domain Spectroscopy; TFCS; S; ASOPS; Terahertz; Zeit-Domänen-Spektroskopie"
(tags should not be double, there should be no "S"-tag)
Any ideas? See list of active shell extensions attached.
Best,
Philipp