Hey enjoy and i hope you can try this trick yourself!
Was helped by my friend Bedeviere (thanks!!) this was such a spontaneaus experiment so i didn't record from the beginning.
About the error i got at video end:
So i recorded my gameplay using Windows 10's built-in Xbox Game Bar. Once i'm starting to fall, somehow almost my whole keyboard works funny (except my numeric keypad); every key that i pressed leads to app-switch, like alt+tab. Thus i couldn't walk, jump, and do anything except move the camera lol. Weirdly enough the solution was simple: open the Xbox Game Bar (windows+alt+g or from start menu), click something, and close it again. Hope this helps to whoever try this trick and get the same error!
Note: At first i thought the error lies in the game itself, makes sense since i went out of map and might have triggered a bug XD I haven't picked up my loots so i wasn't willing to restart the game. I had to change ALL necessary keybindings in BL3 to the numeric keypad (i thought the error was only for game's keybinding). Out of all the keybindings, i couldn't change the binding to discard a weapon. My inventory was full, but there was a freakin Typhoon chest... I had to ask my friend to help me discard my items by doing an ingame trade XD