Win10 64 bit (Creators update); AMD 7700 GPU; 24 gigs RAM; Ivy Bridge i7 processor
Broken: hash e8daf2e
Short description of error
Bevel any model and the first application will always work as it should (width is adjustable by the mouse). The second time and beyond though, the bevel width instantly sticks to the highest possible value and can only be adjusted via the Last Operator Panel (mouse movement does nothing).
Exact steps for others to reproduce the error
Open Blender; Do an edit mode bevel operation on the default cube. Now do another bevel operation.
A .blend file is not needed for this case since it's extremely trivial to reproduce using the startup scene.