(from https://bugzilla.redhat.com/show_bug.cgi?id=244093)

The shutdown confirmation dialog is resized automatically, after one second,
without user intervention.

Version-Release number of selected component (if applicable):
2.18.2

How reproducible:
Always

Steps to Reproduce:
1. Click on the Fedora menu'
2. Select Shutdown
  
Actual results:
The dialog opens and after one second it is resized.

Expected results:
The dialog should not resize by itself, it should keep the size it has when opened.

Additional info:
Seems that the dialog is initially created with a bigger font, then the font is
replaced with a smaller one and the dialog resized.