System Information
Operating system: Windows-10-10.0.16299 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 417.71
Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-18 14:52, hash: rB38d4483c6a51
Worked: (optional)
Short description of error
For examlpe no coordinate of selection in UV Vertex tab when two or more objects are in edit mode, particulary uv's from selected - not active object.
Its very confusing because in 2.79 there was addon called "Multi Object UV Editing" where You could do everything with all uv's.
Exact steps for others to reproduce the error
select two objects, enter edit mode, unwrap, select uv island, edge, face or vertex from not active object and move.
Example file: