Mac Studio, OS Ventura 13.2.1 (but the issues happens on PC as well, I've tested)
This is a sort of a longer standing issue when using the selection tool and selecting a trill with a flat, natural, or sharp symbol. There is an enormous dashed selection box that pops up. This is troublesome as it means finale gets confused if you're trying to select something else close to this trill since often this selection box will cover another item, like notes, the measure itself, articulations, etc. It becomes really annoying if you are working on a score and you try to select another staff or something similar and finale selects the trill instead.
I have sent multiple screen recordings to the finale tech support, and in the end, they said:
"Unfortunately, since this is expected behavior that can't be modified in Finale's settings, I'm afraid I can't offer much with regard to a workaround other than experimenting with the trill placement."
And this is using a finale default document with their default trill markings. Custom alterations are no better. The issue crops up because there is a ton of extra space in the characters for those alterations. No idea why.
Anyone? Let's see if we can get Finale to adjust this somehow.