the lookup is based on filename, not tags, and is editable in the search form
potenial_user
I renamed the movie files, and their folders before copying to the destination on my Plex server. In Plex the Title Name and Tag Name matched the movie's meta tag. I had to make the changes, and lock it.
Yes I know its editable in the search form. That is what I've had to do IF I didn't Edit (pencil icon) and adjust the Title and Sort Title on the General tab before trying to match/search.
It can also make a difference when exporting my movies using WebTools-NG
I realize its not a major issue, and I can manually work around it, but as I buy more movies that are 4K, I'm starting to run into it more.