As by the title I noticed a small gate glitch. I checked around the entire airport and found it to be only one gate.
C18 is missing part of its gate.
Before you ask, my device is an iPad 8th Generation, I have 56 GB remaining, I have a strong and stable WiFi connection, and my scenery settings are in the following order.
I restarted my device and app, as well as cleared scenery cache. I don’t believe an app reinstall is necessary.