This bug, which occurs on mobile devices, is that the button that allows you to view two worlds on the main screen is missing, unless you have the large interface or GUI -1. Hopefully they fix this bug soon :)
MCPE-217341
The button to change how worlds are displayed in the Play screen is not visible if the GUI scale is set to -1 on mobile devices
Open
4
(Unassigned)
1419691
Confirmed
Android
1.21.72 Hotfix, 1.21.80.28 Preview, 1.21.80
Retrieved
Sorry, I made a mistake when writing the report. The bug doesn't happen on Amazon, but on Android. I made a mistake when I was writing the report.