Anaconda warnings like GtkWarning: Failed to set text from markup due to error parsing markup: Error on line 2 char 32: Element 'markup' was closed, but the currently open element is 'NAME'

Issue

• Anaconda throws warnings in anaconda.log like follows.

$ grep Gtk anaconda.log 
16:12:58,788 WARNING : /usr/lib/anaconda/gui.py:1628: Warning: IA__g_object_set_property: object class `GtkCellRendererText' has no property named `active'
16:13:16,852 WARNING : /usr/lib/anaconda/gui.py:406: Warning: IA__g_object_set_property: object class `GtkCellRendererText' has no property named `active'
16:13:16,997 WARNING : /usr/lib/anaconda/gui.py:448: Warning: IA__g_object_set_property: object class `GtkCellRendererText' has no property named `active'
16:15:38,723 WARNING : /usr/lib/anaconda/iw/progress_gui.py:67: GtkWarning: Failed to set text from markup due to error parsing markup: Error on line 2 char 32: Element 'markup' was closed, but the currently open element is 'NAME'
16:25:36,319 WARNING : /usr/lib/anaconda/iw/progress_gui.py:55: GtkWarning: gtk_progress_set_percentage: assertion `percentage >= 0 && percentage <= 1.0' failed