Not a big bug, but in the app, when reviewing a flight log, you can't click on the "<" button to see the previous flight log. Pressing ">" advances to the next log as it should.

You are right and I think it is because the "<" is almost hidden by the location on my Mini Ipad 4 screen.

"Just checked my Mini4 and I can see the "<" but it doesn't respond to my touch. I can see the ">" and it will respond to my touch most but not all the time. Just check and both "< and >" work on my iPhone 6. Except just noticed that iOS on the iPhone is 11.2.2 and on Mini 4 was 11.2.1. So am updating the Mini 4 now and will see if it works. the GO4 app on both devices is 4.1.22 Done updating iOS on Mini 4.
Neither < nor > now do NOT work on my Mini 4 after updating to 11.2.2. Not a big deal for me, since i didn't know that option was available and i had never used it before. But....