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

[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?