Hi Matt,

Yes, the bug has been fixed in VFP Advanced.

Please refer to the file history.txt:

**************************************************
2016/9/5

1, VFP 9.0 Fix19 - SYS(9000) Automatic Dock The Dockable Windows ok.


**************************************************
2016/7/15

1, VFP 9.0 Fix18 - Moving The Dockable Windows ok.

Best regards.

Chen
2017.3.30