It's kind of annoying how moving left or right is inconsistent and your character will sometimes just not move at all until after you smash the A or D or Left or Right arrow 50 billion times. Makes absolutely no sense with why it just 'half the time doesn't work'.
Hi!
It's not a bug but a game design flaw by me. I tried it myself and I thought that it would be better to have a small delay between moving left and right since it leaves less room for error. You are not first one to say that so I'll remove it so that there is bo delay in vertical movement. I'll upload new version when I get up next morning! Thanks for the feedback.