Gena Pro & Gaia Undo Spawn - Unity Crash

[chiken]

In Unity 2021.3.9f1 LTS, if you spawn something and then press undo (ctrl + z), unity crashes.

This happens in both Gena Pro [3.3.21] & Gaia 2021 [3.3.0].

To reproduce this issue with gena pro,

1) Create a new scene and spawn a plane or terrain
2) Create a gena spawner and spawn a prefab object onto the object in step 1
3) Press Ctrl + Z
4) Unity crashes

[Bryan]

Sadly this is a Unity process which is out of our control. 
I would suggest either looking into the crash log or send a message to Unity regarding this issue.