Updated to 14.8-1.19 Fabric Loader and tried using the Bobby 4.0 but it crashes with a divisible by 0 java error. Doesnt crash on a Single Player World. Tried joining a 1.19 server and a 1.18.2 server that allows 1.19 clients to join.
Time: 7/12/22, 7:46 PM

  | Description: Unexpected error
  |  
  | java.lang.ArithmeticException: / by zero
  | at net.minecraft.class_310.handler$zzf000$bobbyUpdate(class_310.java:2889)
  | at net.minecraft.class_310.method_1523(class_310.java:1098)
  | at net.minecraft.class_310.method_1514(class_310.java:734)
  | at net.minecraft.client.main.Main.main(Main.java:237)
  | at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:461)
  | at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
  | at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java

https://paste.gg/p/anonymous/647be6f4141b4343be367e3bd9269e7d

same problem - crashing when I use Bobby on a 1.19 server. (I'm using a Apple M1 - not sure if that has anything to do with it)

Description: Unexpected error

  |  
  | java.lang.ArithmeticException: / by zero
  | at net.minecraft.class_310.handler$zzf000$bobbyUpdate(class_310.java:2889)
  | at net.minecraft.class_310.method_1523(class_310.java:1098)
  | at net.minecraft.class_310.method_1514(class_310.java:734)
  | at net.minecraft.client.main.Main.main(Main.java:237)
  | at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:461)
  | at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
  | at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
  | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  | at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  | at java.base/java.lang.reflect.Method.invoke(Method.java:568)
  | at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:210)
  | at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:245)
  | at org.multimc.EntryPoint.listen(EntryPoint.java:143)
  | at org.multimc.EntryPoint.main(EntryPoint.java:34)

https://paste.gg/p/anonymous/d806276fe2c042c2b5f1823938afa4b0

Could one of you please attach your options.txt file?
And then please try without Optifine.
And if that doesn't help, try changing your Max Framerate setting. Based on the error it's 0, but that's not a valid value.

Report this to Optifine then. It must not set the maxFramerate to 0, that's not a valid value.

https://paste.gg/p/anonymous/150e0aee95d44a32853b3673472bcc74

It is working without Optifine and Optifabric. Tested on both a Paper and a Fabric server - logged in beautifully!

Switched framerate from VSync to Unlimited (and various numbers in between) and Bobby is working!!

I can confirm that Vsync is crashing the game!
I have a 12900k 3080ti win 11... works beautifully until I drop it down to Vsync and crash!