Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: AMD Radeon(TM) R7 Graphics ATI Technologies Inc. 4.5.13539 Core Profile Context 24.20.13011.1009
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-01-29 16:35, hash: rBd0f59d38429d
Worked: (newest version of Blender that worked as expected)
Short description of error
Geometry Node cannot have two Group Output nodes at the same time, otherwise it will invalid.
The expected behavior in the Shader Editor:
Gometry Node Editor:
Exact steps for others to reproduce the error
Open the geometry Node Editor.
Duplicate the group output node, Subdivision Surface will invalid.