Short edges

[Stem]

With "Plane cut", is that somehow calculating the shortest edge (that can be created) based on size of object?

For example.
Created default 2x2x2 cube. Inset a face by 0.005. "Plane cut" across inset face, works OK.

Create default 2x2x2 cube and scale by 1000% (or create cube 20x20x20). Inset a face by 0.005. "Plane cut" across inset face, the short edges (of 0.005) will not be created.