ATC not recognising custom callsigns or tail numbers

Thanks, Neo! You know, I was messing in those boxes last night and they almost seem bugged. It’s like the cursor is far right and when I was inputting new text into them I took my mouse over to click close and everything I wrote disappeared. I also noticed that the call sign was switching over to all caps and made two words one word automatically when trying to rewrite what I had written but disappeared initially. I don’t recall seeing a CLEAR/DELETE button that comes up but I’ll mess with it again later and see if it does.