It seems that meshing a ball in 3D with any radius other than 1.0 doesn’t work in the recent version. If I choose another radius (tried 0.9; 1.1; 2.0 for example), I get an empty mesh, i.e., zero nodes.
Doesn’t work in NGSolve-6.2.1809-62-g4b97ea5 to which I updated yesterday.
It also didn’t work in my previous installation NGSolve-6.2.1808-something.
However it works on another installation NGSolve-6.2.1804-69-g9ef7f18 I have.
I attached a short test script, which seems to work only for r=1.