CTRL-Z(undo) in the graph editor select all fcurves
Open, NormalPublic

Description

System Information
Tested on windows 7 / w10

Blender Version
Broken: (2.79a official, 2.79.4 0301df4 daylie build)

Short description of error
Undo in the graph editor select all fcurves on armature (work with action on object)
Another person experience the bug and talk about it in blender stack exchange :
https://blender.stackexchange.com/questions/96340/why-does-undo-select-all-channels-in-graph-editor

Exact steps for others to reproduce the error
Add an armature, go into pose mode, add a keyframe, select a channel in the graph editor, move it, press ctrl+z, all channel are now selected for no reason

Details

Type
Bug