Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce 940MX/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 376.54
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-06 00:27, hash: rB8b2b79c2108b
Short description of error
the option within the pie menu addon to switch modes shows blank when Tab is pressed on an armature, this issue has been present since the api freeze.
Exact steps for others to reproduce the error
-enable the pie menu addon in the preferences
-add or select any armature in your scene
- press tab, you will see that that there are no options presented unless you go to the top of the window and select the mode.