[epiphany] Fix tab switching in new tab

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 5d07310862c4595defcb96d74a819c35c832a7b8
Author: Jan-Michael Brummer <jan brummer tabos org>
Date:   Sun Mar 1 18:27:35 2020 +0100

    Fix tab switching in new tab
    
    Fixes: https://gitlab.gnome.org/GNOME/epiphany/issues/890

 src/ephy-window.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
---
diff --git a/src/ephy-window.c b/src/ephy-window.c
index a5b2ba31b..6a1c0a434 100644
--- a/src/ephy-window.c
+++ b/src/ephy-window.c
@@ -664,10 +664,13 @@ ephy_window_key_press_event (GtkWidget   *widget,
    * that is reserved for Epiphany not allowed to be seen by webpages.
    */
   if (!ephy_window_should_view_receive_key_press_event (EPHY_WINDOW (widget), event) ||
-      !gtk_window_propagate_key_event (GTK_WINDOW (widget), event))
+      !gtk_window_propagate_key_event (GTK_WINDOW (widget), event)) {
     gtk_window_activate_key (GTK_WINDOW (widget), event);
 
-  return GDK_EVENT_STOP;
+    return GDK_EVENT_STOP;
+  }
+
+  return GDK_EVENT_PROPAGATE;
 }
 
 static gboolean