I haven't been able to find a non buggy version of LG #4 at all :(
Downloading the video now to have a look.
Edit: does it bug out in all subtitle programs? maybe try subtitle edit as an alternative?
Edit2: How are you doing the hardsubs?
Editthe3rd: Just found this recording of #4, and as you can see, it seems to have been a stream problem, every version I can find from 3 or 4 sources glitches in some way at the same time.