Index: trac/versioncontrol/web_ui/changeset.py
===================================================================
--- trac/versioncontrol/web_ui/changeset.py	(revision 6333)
+++ trac/versioncontrol/web_ui/changeset.py	(working copy)
@@ -86,13 +86,14 @@
     implements(IPropertyDiffRenderer)
 
     def match_property_diff(self, name):
-        # Support everything but hidden properties.
-        hidden_properties = DefaultPropertyRenderer(self.env).hidden_properties
-        return name not in hidden_properties and 1 or 0
+        # Support everything
+        return 1
 
 
     def render_property_diff(self, name, old_context, old_props,
                              new_context, new_props, options):
+        if name in DefaultPropertyRenderer(self.env).hidden_properties:
+            return tag.li('Property ', tag.strong(name), ' changed')
         old, new = old_props[name], new_props[name]
         # Render as diff only if multiline (see #3002)
         if '\n' not in old and '\n' not in new: