Using Acrobat on a MacBook. I copy-pasted text from Google Docs into a text box on a blank page in acrobat. Highlighted the text to change font and size, but lose the highlight when moving the cursor off text towards the edit functions.
I tried copy pasting from a pdf as well, and pasting without selecting a textbox. Same results. I can highlight the text, but cannot then change fonts etc. I can delete words and type in words.