Arrow keys are treated as diagonals, iso mixup?

ubuntu 16.04 LTS
running by launcher inside a wineskin
v1.6.2 running windows XP
Any directional arrow presses are treated as diagonals, and the diagonals are also treated as diagonals. This includes in menus, and er… ok just save/exit and loaded back in, and now everything is fine…? anyone else get something weird like this? What would cause it? some kind of iso tilepack mistake or something? I have never seen this bug before.