I can't select monsters in the back row with the L stick on my gamepad during battle.

To be honest I've never used the analog stick in the maze and just use the D-Pad, But can confirm the stick does not work as expected in combat and if you try it bugs out the D-pad as well.

Added a short example of the problem to my Bugs You tube list https://youtu.be/BfsTxfrsR8w