System Information
Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: Intel(R) HD Graphics Intel 4.0.0 - Build 10.18.10.5069
This is the most recent video drivers available.

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e
Worked: (2.79b)

Short description of error
Can not select bones using LMB/RMB in the same way as in 2.79b.

I tried both mouse selection settings LMB/RMB, made no difference.
I tried resetting to factory settings that did not solve the issue.

In Edit & Pose Modes I can only select the root bone and its head end using LMB/RMB.
If I repeatedly select the root bone or its head end it will cycle to the next bone or head end.

Box select does not work on child bone(s), but will select all of the bones if the root bone is in the selection.

Circle select will select child bone(s) and bone end(s). It also selects any bones that may be behind the target bone.

I searched for a solution online with no luck.
I found a post saying the issue had been solved (May 28, v2.80.72).
I'm using a newer version (v2.80.75 release version) guess it has returned.
Video drivers have been updated a few days ago.

Exact steps for others to reproduce the error
No special setup, just make some bones and try to edit or pose them.