wxPython demo and WIT issue

wxPython Users
#1

Other problem,

  1. Launch wxPython demo,
  2. Click ‘Help/Open Widget Inspector’ menu
  3. Close WIT frame

ERROR (minor) :

EvtHandler::SearchDynamicEventTable():
The above exception was the direct cause of the following exception:
SystemError: <class ‘wx._core.ChildFocusEvent’> returned a result with an error set