It's really cool bro <3
The only bug I found was, that if you press tab, The Unity uI navigation selects a button on the screen, then if you press space, it counts as clicking that Ui button.
I was able to open my inventory with space, because I pressed tab to close the inventory, which selected the Inventory button as active, and then when pressing space it would count as me clicking that button.
You can disable Ui navigation in the Button component, I think this is for controller support, idk though, I had a similar problem with my game, which is slightly similar to yours :))) So I love elemental games.
GG