Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 417.22
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-02 13:31, hash: rBe7356bb01198
Short description of error
While in face mode, if you try to run the UV Select More operator, it appears to select the last selected set of loops from another selection mode (if one exists). Vert and Edge mode do not seem to be affected by this.
Exact steps for others to reproduce the error
Select a Face in the UV editor and try to run the UV Select More operator. If you just started Blender- likely nothing will happen (no selection growth or anything).
Now go into vert or edge mode and run the same operator a few times to grow the selection out as expected. make note of what the selection looks like so you can compare.
Now go into face mode again and select some completely unrelated area and run the operator- the last selection reappears instead of the expected result.
See the attached video: