Here i go. I ve made a gallery with all of the pictures here https://postimg.cc/gallery/39qo37s6g/
From left to right
The first pic is the physical button on the joystick`s throttle part. That button is taken just for the example, because that glitch appears with every button, numbered higher than 15 AFAIK.
The second pic is the KDE control panel represents that particular button when it`s being pressed (its the 27 button, 24 represents the Saitek`s profile selection switch)
At the third and fourth pics I`m trying to assign "engage hyperdrive" function to that particular button (the button number 27) See? That`s been recognised by the game as the button number 1 and the real fire button was cleared immediately after that.
Moreover, if i press this or any other higher_than_15 buttons in the game, it fires the laser. Even when they arent set in the list (none of them). That looks like the game itself, not the linux, recognises these buttons as the first one.