This question has been asked a few times in various forms here, but none of the solutions work for me. I have included a short video showing the issue, where I highlight everything.
Video broken down:
- Brand new install of 2.8 (even deleted the data in Appdata/Roaming/Blender Foundation/2.80)
- Restriction Toggle for the armature is not disabled
- 'Lock Object Modes' in Pose Mode whether On or Off doesn't fix it
- Unparenting the mesh from the armature and reparenting doesn't fix it
Something I forgot to say in the video, importing that character mesh into 2.79 works and doesn't have any of these problems (opening a saved 2.79 project in 2.80 does not fix it either). Same with other character meshes I have tested.
I genuinely don't know what to do, and neither do my buddies who work with Blender regularly. I have been trying to fix this for 3 days now, and I am very frustrated as it's preventing me from working with any armatures.