Document that in WebGUI::Search, assetIds are not AND'ed with the other rules.

docs/changelog/7.x.x.txt

@@ -1,4 +1,5 @@
 7.10.11
+ - fixed #12057: WebGUI::Search, assetIds search clause
 
 7.10.10
  - fixed #12035: Story Manager - make keywords from Story view work

lib/WebGUI/Search.pm

@@ -285,6 +285,9 @@ A hash reference containing rules for a search. The rules will will be hash refe
 
  { keywords => "something to search for", lineage => [ "000001000005", "000001000074000003" ] };
 
+All rules, except for assetIds, are logically AND'ed together to create a finer search.  assetIds are OR'ed to the final
+query.
+
 =head4 keywords
 
 This rule limits the search results to assets that match keyword criteria.
@@ -303,6 +306,8 @@ This rule limits the search to a specific set of assetIds. An array reference of
 
  assetIds => [ "PBasset000000000000001", ]
 
+Unlike every other rule, this rule is logically OR'ed with the other rules.
+
 =head4 classes
 
 This rule limits the search to a specific set of asset classes. An array reference of class names.