diff -urp alexandria-book-collection-manager-0.7.4.old.2/lib/alexandria/ui/book_properties_dialog_base.rb alexandria-book-collection-manager-0.7.4.new/lib/alexandria/ui/book_properties_dialog_base.rb
--- alexandria-book-collection-manager-0.7.4.old.2/lib/alexandria/ui/book_properties_dialog_base.rb	2020-01-15 14:38:34.849856129 +0900
+++ alexandria-book-collection-manager-0.7.4.new/lib/alexandria/ui/book_properties_dialog_base.rb	2020-01-15 14:39:05.733196547 +0900
@@ -303,7 +303,7 @@ module Alexandria
       def on_destroy
         @book_properties_dialog.hide
         # Stop notebook trying to set tab labels at this time
-        @notebook.show_tabs = false
+        #@notebook.show_tabs = false
       end
 
       def on_loaned