GtkText - did not receive a focus-out event.

[timlau]

Describe the bug

When clearing the search field and pressing Enter the a Gtk Waring is printed

local-yumex:41882): Gtk-WARNING **: 12:28:37.787: GtkText - did not receive a focus-out event.
If you handle this event, you must return
GDK_EVENT_PROPAGATE so the default handler
gets the event as well

Versions
Current Master

Logs
12:28:37 DEBUG : (yumex.ui.window) - Reset search
12:28:37 DEBUG : (yumex.ui.package_settings) - SIGNAL: emit package-filter-changed: installed
12:28:37 DEBUG : (yumex.ui.window) - SIGNAL: package filter changed : installed
12:28:37 DEBUG : (yumex.ui.package_view) - Loading packages : installed
12:28:37 DEBUG : (yumex.utils) - >> Running async job : get_packages_by_filter.
12:28:37 DEBUG : (yumex.utils) - << Completed async job : get_packages_by_filter.

(local-yumex:41882): Gtk-WARNING **: 12:28:37.787: GtkText - did not receive a focus-out event.
If you handle this event, you must return
GDK_EVENT_PROPAGATE so the default handler
gets the event as well
12:28:37 DEBUG : (yumex.utils) - >> starting add_packages_to_store
12:28:37 DEBUG : (yumex.ui.package_view) - Adding packages to store
12:28:37 DEBUG : (yumex.ui.package_view) - --> sorting by : name
12:28:37 DEBUG : (yumex.ui.package_view) - --> number of packages : 2449