Reproduction Steps

Unfortunately I can't give much information on how to recreate the crash.

1. I join my world and fly to a specific area
2. The game crashes with: java.lang.IllegalArgumentException: Backing buffer is using vertex format

Crash Report File

https://gist.github.com/Grayray75/050ccdc3cb9be64f6ad33bedbc1f7911

Additional Information

This crash only happens to me only in a specific area, not anywhere else.
I'm using the latest version of the "1.16.x/next" branch.

If necessary, I can provide additional informations.

Can confirm.

Known bug with Boat rendering, seems to be a regression from test build fvs4

I can also confirm this crash: https://pastebin.com/Hed5BZLB
Built from the latest commit.

Fixed with f25ea17.