Hi,
In Rhino 7 (7.34.23267.11002, 2023-09-24) the Picture command gets called, when selected and copied sub-objects get pasted.
In order to recreate this bug, simply draw a closed, planar polyline (e.g triangle) in the Top-view.
Select one polyline segment with SHIFT + CMD + mouse click. Then hit CMD + C to copy the sub-object and CMD + V to paste it.
The expected behavior in my opinion should be that the copied sub-object gets pasted in place as a new object on top of the copied one.