Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 419.72
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-15 22:35, hash: rB87de71a8aaa0
Short description of error
I saved a file, and when trying to load it (I had more people test it and they found the same issue), seems like the file was corrupted: meshes are in the fale and can be loaded, but objects dissapeared and are not to be found within the file; interface parts duplicated (workspaces, properties editor)...
However, the .blend1 file automatically saved just a moment before works just fine. I'm attaching both files.
Exact steps for others to reproduce the error
Load file: nothing in the viewport. In the outliner you should find orphan meshes, but the objects are gone. .blend1 file works well, to see the difference.