System Information
Operating system: Kubuntu 16.04
Graphics card: GTX 1070

Blender Version
Broken:2.8; 860a9f979d60
Worked: (optional)

Short description of error
putting a simple deform modifier in bend mode doesn't work on a plane on x and y axis.

Exact steps for others to reproduce the error

• create plane
• subdivide a few times, apply
• add simple deform modifier
• switch to method bend, try switching between axis