EDIT: I edited this post because I originally thought this was a cosmetic defect, but it’s more than that - since the relative position of the copied objects changes (In some cases, it may be nearly impossible to recover).
RE-EDITED to simplify the process of recreating the bug.
Just stumbled across an interesting defect - pretty sure it’s been there since layers were introduced, but I just saw it on 6.11 Beta:
Start with 3 objects:
Select 2 objects and add them to a new layer (Green)
Select all objects (CTRL-A) or box…
Now press Copy:
It appears that only the third object was copied (because of the offset)…however…it turns out that the other objects were also copied, but because they’re in another layer, they don’t cause the offset. If we move the copied objects away, we reveal the originals:
Aside from being cosmetically confusing and inconsistent, the relative position between the objects is altered and is no longer accurate.