Clicking edit source causes zim to use full CPU

[Scott Fraser]

When I click the edit source button zim uses 100% of a CPU thread.
Sorry if this is too little info.

Zim 0.63 Windows 10
This is zim 0.63
Locale: en_AU cp1252
Python: (2, 7, 10, 'final', 0)
Gtk: (2, 24, 10)
Pygtk: (2, 24, 0)

[Jaap Karssenberg (jaap.karssenberg)]

Afraid I don't know how to debug that

[Patrick (pwespi)]

I'm experiencing the same problem as Scott in Zim 0.65 on Windows 10. I don't understand why but the problem seems to go away when I comment out the two following lines in zim/applications.py :
if callback:
 flags |= gobject.SPAWN_DO_NOT_REAP_CHILD