As part of the move of python3 by default please support python3.
This bug appears to have been reported against 'rawhide' during the Fedora 24 development cycle. Changing version to '24'. More information and reason for this action is here: https://fedoraproject.org/wiki/Fedora_Program_Management/HouseKeeping/Fedora24#Rawhide_Rebase
As the upstream does not support Python 3 yet, it no longer blocks PYTHON3 porting bug.
Already reported upstream here: https://bugzilla.gnome.org/show_bug.cgi?id=740219