You are right about that, I had accidently copied a couple of animation frames which was the reason for the desync. My bad!
However, it appears that tearing still does occur. Those four sample games were made with your r92 update, and I'm still seeing quite a bit of tearing regardless of which display or rendering settings I use when exporting the demos.
Is anyone else seeing this as well?
Also, does it matter whether or not those demos were originally generated in r91 despite being compiled in r92? Because if so then that might be the reason why your fixes aren't having any effects (unless they have and I'm just blind to it?)