Ah, I know what would be causing that glitch, but I've never seen it happen. I used events to make the character face forward when climbing ropes. I've never had it glitch that the character wouldn't face the correct way though.
In Ace, they have a 'ladder' preset for the ropes so even if it is a random glitch in vx, the ace version doesn't use those events at all so it won't happen once the new demo is released.