This is on Publisher 2.1.0 (Yep, the shinny new one…)
If you copy a text frame or group where there is a pinned object, the object shrinks when pasting or duplicating.
STEPS:
1 - Pin a shape or object to a text.
2 - Copy or duplicate layer or alt-drag the text
3 - The pinned object in the copy is much smaller than original
Checked that it is the pin that causes the error. If you copy it unpinned it pastes right.