in github master:

commit d72989505c608a5ad0c443b8e7f03da70b2201ad
Author: Adrian Likins <alikins>
Date:   Tue Sep 8 10:53:19 2015 -0400

    884288: Make register widgets handle resizing.
    
    For wide windows or dialogs, most widgets were set to
    use a align mode of 'fill'. This causes things like entry
    boxes to expand to the entire width of the parent. Combined
    with widget package that was causing the RegisterWidget to
    expand to cover the widgets register screen, many widgets
    fill the entire width of the screen.
    
    Make Entry widgets set a min and max width, but allow them
    to expand and fill up to that max width.
    
    Tweak most of the Labels to auto wrap. Enabling end ellipsing
    on most labels, but also give them plenty of room to expand with
    by setting the suggest number of lines before ellipsing. Labels
    also get set to expand. That combo removes the behavior of
    labels that require a ton of horizontal space, forcing the
    RegisterWidget to be very wide (and causing entries and the
    like to fill all of that space).
    
    Add Gtk.Adjustments for any ScrolledWindows that need it. Remove
    some Gtk.ViewPorts that are not needed (those holding a TreeView
    for example).
    
    Set min size requests for the ScrollWindows, so the defualt size
    allocated doesn't hide the contents.
    
    Replace some Gtk.Box based layouts with Gtk.Grid instead. Especially
    those that need Gtk.Alignment widgets for formatting.
    
    Generally reduce some of the spacing and margins of the widgets,
    especially around the edges of notebook screens. It should be up
    to the parent that holds the RegisterWidget to setup borders, spacing,
    and margins.
    
    Add size groups for some of the more fussier layouts.

Created attachment 1079193 [details]
Fixed dialogs

Looks good now.  The dialogs are proportioned better, and the progress dialog shows the slider moving now.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2122.html