I installed the actual version of Screeenshot Captor (2.90.01).
I placed an "Text Object" to an image and typed as text the number "1".
The Object Select Mode is still active, so I pressed [CTRL]+[C] to copy the text object.
Then I pressed [CTRL]+[V] to paste the text object (I want a copy of the first object).
But here the complete screen shot is inserted again.
In an older version of Screenshot Captor (2.78.01) it worked as described above.
I guess this is a bug, so please have a look at it.