That's really a strange issue. It was not present in version 3.8.5 and it is happening in different iOS versions. I tried to build version 3.8.5 again and with the new build the issue is there. So it is not caused by the code changes in version 3.8.6.
I will try to find a workaround but I guess I will need a couple of days for this. At least I can reproduce it easily.
I strongly suspect, that this issue also causes the loop button to move out of the screen on some devices.