(example: 2.79b release)
(example: 2.80, edbf15d3c044, blender2.8, 2018-11-28, as found on the splash screen)
Short description of error
I don't know why, but for some reason when I select my Right side of my armature and then right click to symetrize, only some of the armature goes in. I try again, and check that all of my parts are selected, and it still doesn't happen. could you maybe explain this to me, or help me figure out whats wrong?
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).