Thank you for your comment and test !! A “patched” version is on the way, gonna post it as soon as the jam is over.
I use an azerty keyboard and messed up the key mapping for qwerty :/ The soft lock moment is real, gonna make some friends try the game before submitting it next time :) And the mushrooms not showing up is mos likely due to the physics engine, and the fact that the inventory is part of a different window (which is just bad decision) So if you want to, in a few days the game will be (normally) fully playable !!!