Operating system: Windows 10 home 64 bit
Graphics card: Nvidia GeForce GTX 1070
2.80, 7d792976e100, blender2.8, 2019-02-18
When enabling proportional editing with two meshes in edit mode, the proportional editing does not affect the other mesh, as if connected proportional editing is enabled instead. Proportional editing works on either of meshes when they're both in edit mode, but doesn't influence the other at all.
- Create two separate objects. (two intersecting spheres for example)
- Select both objects and enter edit mode
- enable proportional editing.
- Select and move vertexes on one or both objects that are within proportional editing range.