ID 163170 - Custom Panels will open in the wrong pane if the grey icon is used to add them

Created an attachment (id=16883)
Repro python files

Custom Panels will open in the wrong pane if the grey icon is used to add them.
This will only happen for certain python panels (possibly pyside).

Reproduced on:
CentOS 5
Windows 8

Nuke 9.0v7
Nuke 9.0v1

works fine in:
Nuke 8.0v7

Repro:
1) Download the attached repro files and place them into your .nuke folder. If you already have a menu.py you can just copy the content of the provided one and add it to yours.

2) Start Nuke 9

3) In one of the panes click the grey ICON to add a new tab - using rightclick WONT WORK, or rather wont demonstrate the bug

4) Select Windows > Custom > SearchReplace

- It pops up in one of the other panes

The bug will not appear if you just make a panel using the script editor with the following lines:

myToolbar = nuke.toolbar( 'My nodes' )
myToolbar.addCommand( 'My Gizmo', lambda: nuke.createNode('NoOp') )


Host(s):