Bug#400177: Cancel button is not accessible with TAB key while a progressbar runs

[Attilio Fiandrotti <attilio.fiandrotti@gmail.com>]

package: cdebconf-gtk-udeb
severity: minor

the cancel button, displayed while the progressbar runs if the debconf 
client has set the procresscancel capability, canot be accessed using 
the TAB button.
Try tabbing to cancel button while the dhcp client tries to 
autoconfigure the network (tested on AMD64 so far)

cheers

Attilio