Fonts. I’ll bet you're pasting from an older file to F27? When they went to SMuFL fonts, a lot of people ran into this. Do a search in the Finale support section, in Knowledge Base.

https://makemusic.zendesk.com/hc/en-us#finale

Also, please read this: https://makemusic.zendesk.com/hc/en-us/community/posts/215729367-General-Discussion-House-Rules