diff --git a/pages/site/releases/2.16.md b/pages/site/releases/2.16.md
index 3e0f2fd..ebcc984 100644
--- a/pages/site/releases/2.16.md
+++ b/pages/site/releases/2.16.md
@@ -869,7 +869,14 @@
   In some cases the private and work-in-progress status indicator for
   changes updated by push was shown incorrectly.
 
-* Fix case-insensitive searching of hashtags.
+* [Issue 10564](https://bugs.chromium.org/p/gerrit/issues/detail?id=10564):
+Fix case-insensitive searching of hashtags.
+
+  The index field has always been stored lowercase, since we intended
+  hashtag searches to be case-insensitive. However, we never converted the
+  input string to lower case, with the unexpected result that searching
+  for `hashtag:ACamelCaseTag` would not return results for changes who
+  contain that exact hashtag.
 
 * [Issue 10112](https://bugs.chromium.org/p/gerrit/issues/detail?id=10112):
 Upgrade rules_closure to make Gerrit buildable with the latest Bazel version.