commit 131a5a086747d4d48a72b3eaa6e6ae69cd4c10bb
Author: Christian Stadelmann <dev@genodeftest.de>
Date:   Sun Jun 12 20:16:40 2016 +0200

    Don't allow main_view to shrink
    
    Without this change it is possible to resize the right side GtkOverlay to a size of 0.
    This might render nautilus unusable for inexperienced users and breaks UX for everyone.

diff --git a/src/resources/ui/nautilus-window.ui b/src/resources/ui/nautilus-window.ui
index 64bd8ea..b8c1599 100644
--- a/src/resources/ui/nautilus-window.ui
+++ b/src/resources/ui/nautilus-window.ui
@@ -196,6 +196,9 @@
                   </object>
                 </child>
               </object>
+              <packing>
+               <property name="shrink">False</property>
+              </packing>
             </child>
           </object>
         </child>
