Operating system: Linux (Ubuntu 18.04)
Graphics card: GTX 1080TI (NV driver 440.26)
Broken: 2.82, (blender-2.82-7af560438966-linux-glibc217-x86_64)
Worked: 2.81 released
Short description of error
Smoothing vertices in edit mode does not work or whacks the smooth (varies).
Exact steps for others to reproduce the error
Simply subdivide the initial cube a few times and attempt to apply smooth using the [T] menu or assigned shortcut.
Typically nothing happens! Often it appears UI-locked (unresponsive) until escape of mouse right is clicked.
If doing the smooth via menu [Vertex/Smooth vertices] sometimes (seldom) the smooth seems to work but with random amount/proportions.