Issue still exists in 0.15.6. Please reopen issue and let us know if we can assist in pinpointing the problem.
The issue still remains on 0.15.1. I can't update the issue in any way, just comment and attach files. Hence I ask someone that can to reopen the issue and add the version.
Here is how to reproduce:
Find a gamepad with L2 and R2 buttons (buttons, that is - not triggers).
Verify that the buttons give the correct key events, e.g. for L2, KeyEvent.KEYCODE_BUTTON_L2, or value 104 (see screenshot)
Open MCPE and go to the "Controller Layout" option
Try to assign L2 or R2 to any action - Not possible
Hope this helps pinpoint the issue.
I have the same issue. I have two gamepads. On my MadCatz c.t.r.l.r, the right and left trigger buttons are actually triggers (analog). Everything works fine in MCPE using that gamepad. However, on my second gamepads, these buttons are buttons (digital). Other games and apps recognize these as buttons, but in MCPE, I can't assign these buttons to any action in the gamepad config option.
Same issue with 0.14.3 and 0.15 beta.
As it is not possible (for me) to update Affects Version/s, I just want to confirm that this issue still remains in 0.17.0.1.
Please reopen as more people seems to face the same issue with different controllers.