Interaction Occurence does not move with Messages on Sequence diagram

[satrman]

Hi all,

we fairly often place another diagram reference via Interaction Occurence on sequence diagrams.
In version 15.2 when one moved (without alt/ctrl) message call vertically, all messages and frames including Interaction Occurences moved down respectively.
In version 16.2 Interaction Occurences are left without change which can fairly damage diagram especially the large one with combination of user not being aware of this behavior.
The question is: Was it intentional change? If so, is there any setting to return to EA15 behavior?

Thanks in advance for your help

PS Well, there is a workaround by making message call to interaction occurence, but in previous versions (I think 13 or 14) it ruined many of our diagrams when used, so we made strict rule not to use it...