Cannot select mesh after putting my armature in pose mode My problem is pretty straightforward. To weight paint my character I must 
  1) Select the armature and put it in pose mode
  2) Select mesh and put it in weight painting mode
For some reason after I put my armature in pose mode I can no longer select the mesh. I attempted to put my mesh in weight paint mode first, but then I could not select the bones. I used automatic weighting to see if the armature would deform, and it does so there is no problem there. Just the auto weights are horrible for this character.

I am using version 2.8
https://drive.google.com/open?id=1RnFKtQMpJs4CX91MXeYArBxmO-Zcu5zg
And there is the shareable link. You will see I have a character and an armature.
Make sure you untick "Lock object modes" in the Edit tab at the top panel.
Trouble is, it doesn't always help. For some reason currently I have the same problem with the OP, Lock object modes is off, but I still can't select my character when in pose mode.