I hadn't come across the term until I came here, yes I think it is normal, to a degree. We all have feelings of one kind or another about other people, who they are, what they represent, who they remind us of.

I think it only becomes an issue if like Summertime12 said, the T is inappropriate. Or if something your T says or does starts to mess with your head - that can really screw with progress, because there's a danger that the sessions then become about the therapy relationship rather than what you went to them for in the first place.

Exercise caution, listen to your gut instinct would be my view. If something feels 'off' then it probably is, and needs closer inspection.