tdf#102005 Fix F6 regression in start center

Change-Id: I152a79b79e75bf87c437dd4dd2976c73198e6b52
Reviewed-on: https://gerrit.libreoffice.org/68185
Tested-by: Jenkins
Reviewed-by: V Stuart Foote <vstuart.foote@utsa.edu>
Reviewed-by: Jim Raykowski <raykowj@gmail.com>

sfx2/source/dialog/backingwindow.cxx

@@ -409,6 +409,8 @@ bool BackingWindow::PreNotify(NotifyEvent& rNEvt)
                 }
             }
             else // F6
+            {
+                if( mpAllButtonsBox->HasChildPathFocus() )
                 {
                     if(mpAllRecentThumbnails->IsVisible())
                     {
@@ -422,6 +424,7 @@ bool BackingWindow::PreNotify(NotifyEvent& rNEvt)
                     }
                 }
             }
+        }
 
         // try the 'normal' accelerators (so that eg. Ctrl+Q works)
         if (!mpAccExec)