This is still happening with most objects in the experimental build 0.33.114926, the only fence I can't run though is the ones in the middle of the fields when travelling through woods etc (thin wooden log type one that come up to about hip height, one log running along top then legs going down into ground)

true. sprinting snd vaulting at the same time let's you glitch through almost all objects eventually.

I find that you don't need your fists up, you can just sprint through walls and fences. it works every time sprinting from the inside of a building out, it does not always work sprinting from the outside of a building in.