That shouldn't happen, I tested the game on both Pc and mobile, apart from one bug, there isn't any game breaking bug, maybe you can try again please!
Viewing post in New Build For You jam comments
The same thing happened for me, playing on PC. It didn't seem like the alt key was necessary though? Pressing ctrl to pick things up and pressing ctrl to put them in the battery / to go to the next level worked just fine without ever needing the alt key.
Either way, I really liked this game! The animation at the end was a nice touch too :)