I was controlling Approach and Tower multiple times while this glitched occurred- I would want to instruct an aircraft, and when I tapped the icon, it changed to a Cessna 172 and said the aircraft was unknown. When I tried to tap the aircraft again, the box for instructions popped up, but there were no options to select. I fixed it by switching the ATC offline and reconnecting. It fixed the glitch, however- new planes joined the server and the glitch happened to them.
Any fixes?