Could you please post a screenshot to illustrate the issue?
There have been threads about issues with font-dusplay in pdfs created with Photoshop, but I’m not sure the issue was ever resolved.
A possible work-around might be to convert the type layer to a shape.
That looks about like the stuff others complained about, too, so you should do a Forum search.
I think there was a solution for at least one user but I can’t remember the exact details.