DOC-3223: Some elements would be given an extra newline by the serializer when indented. (#3885)

Author: kemister85

modules/ROOT/pages/8.2.0-release-notes.adoc

@@ -133,6 +133,11 @@ For an example of using custom elements with block-level and inline-level compon
 
 // CCFR here.
 
+===  Some elements would be given an extra newline by the serializer when indented
+// #TINY-12857
+
+Previously, certain elements received an additional newline when indented due to the title not being correctly recognized as a block by the DOM Parser serializer. This caused unwanted whitespace to appear in the output. The issue was resolved by explicitly marking the title as a block within the code, ensuring that serialization no longer introduces unnecessary whitespace.
+
 
 [[security-fixes]]
 == Security fixes