Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 950M/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.30
Broken: version: 2.81 (sub 14), branch: master, commit date: 2019-10-09 19:48, hash: rBfb46d273f885
Short description of error
Odd behavior with "Rip Vertices" and "Rip Vertices and Fill" operators.
This is using the "Rip Vertices and Fill" operator.
Moving the ripped verts with mouse. You have original and ripped verts
Moving ripped verts in operator settings deletes original verts.
Run into similar issues with the "Rip Vertices" operator.