Editor in ObjectPanel disappears if you close the window with the cross

[j-levy]

Tested on:

• macOS 11.4, Lpy 3.8.0 using Python 3.9
• Windows 10 21H1, Lpy 3.0.0 using Python 3.9

reproduce:

• open object panel, for example python -m openalea.lpy.gui.objectpanel
• create any kind of object (Right click, New Item, whatever)
• you can create several items if you want
• double click on an item, this opens the Editor window
• close the editor window using the red dot in the window bar[*]
• double click on any item, this opens the Editor window
• the editor window have the "editor" part not displaying any more, see screenshot :

[*] message in the console:

External WM_DESTROY received for  QWidgetWindow(0x227ca5b27e0, name="objectViewWindow") , parent:  QWidgetWindow(0x227ca5b18e0, name="ObjectDialogWindow") , transient parent:  QWindow(0x0)

[j-levy]

After a bit of investigation I think that:

• the QWidget containing the "editor" part is not destroyed, not resized to a small size, and not overlapped.
• the editor object is still present and reacts to signals like key presses (e.g. pressing H brings up the help page)
• the editor object has still his visibility set to True (if you set the visibility to False while it's still working, you still have the right click that works, for example ; in the bug case it doesn't work anymore)

I think the widget part is crashed

I'll try to delete and re-create it from scratch when creating the window?