Aggravated skeletons move way too fast on trapdoors

It is pretty simple, all you have to do is place a bunch of trapdoors, and have a skeleton follow you. When it gets on the trapdoors, it starts moving super fast. I have a video so you can see what happens.

Edit: Seems like it happens on other not full blocks, but the effect seems more prominent on trapdoors.

I haven't checked other versions, but I guess it doesn't matter that much.

There's a webm and a gfycat link if the video doesn't work for some reason.

https://gfycat.com/PleasingIdealKakapo