I saw a couple of other Render Bugs reported, but not exactly the one I'm witnessing.

I'm on a multiplayer server, and my moving buildings (Windmills, gantries, bearings) do not render properly when they stop their movement and become solid again.

It seems to be random blocks that are rendered and not rendered. You cant move through them, so I believe it to be just a client/server lag of some sort, like the Client isnt agreeing that the blocks are there, but the Server is saying they are.

placing blocks nearby to try to update doesn't fix it either.

IMGUR Post of a Video

*EDIT: No I do not have Optifine!

This issue has been marked as stale because it has been inactive for 3 weeks. It will be closed if it remains inactive for another 3 weeks.

This issue has been closed since it has been inactive for 3 weeks since it was marked as stale.

This issue is affecting me as well, and I too am not using Optifine.

I can post a mod list, but as I am using 367 mods, I suspect that won't be very helpful. No doubt it is a compatibility issue, but after a couple weeks of searching, I still haven't been able to narrow it down.