Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.35
Broken: version: 2.80 (sub 55), branch: blender2.7, commit date: 2019-04-09 18:12, hash: rB009dbc2bc9fb
Short description of error
[Please fill out a short description of the error here]
When switching between the animation editors then you get a Unknown Enum message in the info editor instead of the proper editor type.
Only the Dope Sheet has the correct label. Drivers Editor is recognized as FCurves Editor. The rest is unknown.
As a consequence, there is no way to switch to some of the animation editors by script anymore. You can't reach Timeline, Graph editor and NLA editor.
Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]
Go to scripting layout. Switch in one window through the animation editors. Watch the info editor.