Operating system: Windows 10 64 bits
Graphics card: 2x GTX 1070
Broken: Latest Blender 2.8 beta
Short description of error
On UV Editing tab, there are some uv tools on the left tool panel. Pinch, Relax and Grab doesn't work. Grab with G shortcut works.
Exact steps for others to reproduce the error
No steps necessary. Just try to use Grab, Pinch or Relax tools on UV tab.