Hello. Fantastic game! If I keep pressing the "Z" button on browser and the right arrow at the same time, the selection will go wrong. I haven't tested it on an emulator yet.
Interesting. I've never seen that, but if you lose your controls, sometimes opening the pause menu and closing out restores them. I'll look into that though!
Did you have a lot of money? Gold runs a lot of math behind the scenes, could have been processing the changes and got caught in a loop.