1. build the thing in the image
2. get a horse. Set its speed above 0.3353 (lower amounts may work too)
3. ride it to the building (you want to aim to the center
4. the horse will get over it then glitch
what I think is happening:
The world "thinks" the horse climbed two blocks instantly. When looking at the log, it says either "moved too quickly" or "moved wrongly"
it happens when both sprinting or not