Same thing happening for me.
Version 12.0.1 Build 63173
Windows 10 Enterprise
Whenever I get a call through Jabber, it moves my conversation window slightly. Similar to Jgresczyk's situation, I have multiple monitors with a precise layout so all applications are visible and accessible. Jabber creates a problem when I receive a call, I have to move my conversation window back every time.
Anyone have any ideas what can be done about this?
Thanks,