Until optifine appeared, I played with the Sodium mod on 1.19 and everything worked fine, but after its release, I tried to enter the network game on the server, but the connection did not go through, "world save" appeared and minecraft crashed. After removing Bobby, minecraft worked fine.

Please attach the crash log.
Also, if this is similar to #105, then try removing Optifine and/or changing your Max Framerate setting. Based on the reports in that issue, I'm guessing Optifine sets it to an invalid value.

Duplicate of #105

I can confirm that enabling Vsync crashes the game!