Operating system: Windows 10
Graphics card: NVIDEA GTX 1080ti
Broken: 2.80 e5194835de45 2019-03-01
(example: 2.79b release)
(example: 2.80, edbf15d3c044, blender2.8, 2018-11-28, as found on the splash screen)
Short description of error
When you pose bones in pose mode, blender resets the whole edits to keyframed pose with Undo.
If the armature doesn't have any key frames, undo works fine and it goes back in order of hisory.
But if it has keyframes, it goes back to keyframed position ignoring the edits you make inbetween.
Exact steps for others to reproduce the error
Add a single bone.
Enter Pose Mode.
Set a keyframe to location.
Move the position of a bone several time.
Position of the bone goes back straight to the original position.