Two bugs! One, random minecarts that end at the fifth lane seem to block me from placing a baby on the sixth lane, two, In the latest version (0.2.0.3), I beat It's All Mine 1 and the game just... kept going? It hasn't ended yet and there's no more enemies.
EDIT: I found out how the minecarts glitch! When you move one all the way to the top or bottom, the next square up/down sort of 'locks' and you can't put anything in it. I'm also pretty sure that the problem that I had in It's All Mine involved the new William enemy and the Pegasus. Not sure though.