Ok, I am glad I am not alone in finding strange bugs in webGL version - same for our game (our flag doesn't even at the end of the pole doesn't even spawn). I was mentioning those visual bugs in case you weren't aware. Great game!
PS - when I was doing my block placing test - I got stuck with it trying to spawn a block inside another - curious how you handled figuring out how to place the block if the one they were looking at was occupied (I guess I always tried placing mine on a plane, so that could mean we approached it completely differently)