With the implementation of mouse support on 1.17, right click is not recognizing as a back button anymore (MCPE-122678), but just doing nothing.

Steps to reproduce:

Connect a mouse in your android phone

Makes sure the right button is working in other apps

Play Minecraft and try to place a block or assign a button to the Right Click

Notice Right Click doing nothing

Expected result:

You should be able to use the right click button on android