Operating system: Windows-7-6.1.7601-SP1 64 Bits
Graphics card: AMD Radeon (TM) R9 380 Series ATI Technologies Inc. 4.5.13570 Core Profile Context 19.8.1 26.20.13001.29010
Broken: version: 2.82 (sub 6), branch: master, commit date: 2020-01-28 23:34, hash: rBf9e1e088a4c7
Short description of error
In edit mode, while selecting a shape key, followed by any other operation (Translating vertices or extruding or whatever), followed by an Undo (Ctrl-Z) command causes the shape key selector to hop to the "basis" shape key.
Exact steps for others to reproduce the error
From Default Startup:
- Create two shape keys on Default Cube
- Select shape key Key 1
- Perform any edit mode operation (extrude)
Basis shape key is now selected.