[Bug] Virtual analog stick only moves diagonally when P1 as P2, P3, P4 is selected

[helloyanis]

I have found a bug that is reproductible every time with the virtual stick :

• Pick any game where you can move in any direction, and has multiplayer support. I used Twinkle Star Sprites but it happens in every game.
• In MAME4droid's input options, set the stick type to "Analog" and turn on "P1 as P2, P3, P4".
• The inputs work correctly for both players, except for the joystick which is stuck in a top left to bottom right diagonal axis.
• Changing the stick type to 8-way or d-pad fixes the issue, but it makes it impossible to use "P1 as P2, P3, P4" on analog-based games

If you need any extra details, just ask!

Thank you!