Windows 8.1, I3 4030U with Intel® HD-Grafik 4400 and latest driver
Worked: some days ago, but don't have the buildbot numbers any more
Short description of error
with all settings at default, objects consisting only of verts can't be selected any more, the sun too if only it's "ray" are visible. Switching from automatic in user pref to occlusion queries or depth picking still work.
Exact steps for others to reproduce the error
Open default scene, edit the cube to only keep the verts, go back to object mode and try to select.
I made a file to make it faster:
Neither the cube nor the lamp are possible to select. Note that in this file, the zoom level is important, so don't move the camera.