controller?

[fodder]

with kb, you press up and it moves. release and it stops the thruster..
with controller. you hit RT (on the xbox one controller... axis 5) and it moves... and thrusters stay on.. even when RT is released.. in fact... you have to keep RT held in order to have thruster off..

can't be right... surely?
works ok if i change it to RB (button 5)
..why is there a up/down anyway? there's only thrust...

what is button 14 btw? the default for ability?