What on earth is going on here?

I switched my coloured squares to simple shapes like hearts and people, but when the game scales them up, they start distorting and growing weird appendages! Anyone know what’s going on?

I was looking forward to applying some new code with these images, but the images themselves aren’t really doing well in the game, even without the weird distortions. Maybe I’ll switch back to squares and put symbols in the middle instead?