Unity 2020.1.0 Alpha 16 has been released

Definitely definitely backup this time to everyone.
First time I can't even open unity after importing it crashes and when reloading editor also crashes.
0x00007FF6BCC97845 (Unity) GizmoManager::BuildGizmosFromGameObjectRecursive
is the top thing in the stack trace.
Can't reproduce with new project so will try to hunt it down.. Might just be the first scene it's trying to load.

EDIT: After deleting the scene it was trying to load it starts the vanilla unity scene but I still can't load any of my other scenes without crashing.. Also noticed that all of my prefabs have missing scripts even though there are no compile errors.. So the prefabs lost script references ( can reassign the same ones that were there ).

 

Scenes without prefabs are loadable but many script refs are missing on the gameobjects even though there are no compiler errors.. All the values when reassigning scripts are lost.
All the scenes with prefabs ( with missing scripts refs ) just crash with the build gizmos stack trace.
I haven't found a pattern yet why some script refs are missing and some arent.. Time to revert back not a usable build unfortunately.

EDIT: Material refs are also missing on many MeshRenderers so seems it has nothing to do with the scripts.

 

Why is the Visual Studio Editor package installed by default in new projects? It's not needed. I removed it and created a new script which worked perfectly. Visual Studio opened normally, and so on.

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Its been doing that a while, theres ones for raider and vs code too. It may still work but I stupidly assumed it was a beneficial tool and that they wouldnt have bothered making it if it didnt do anything. I dont think its about the launching, its about the interaction of other packages, and so on.

 

Yes, but these two packages are needed, Visual Studio Editor is not.