From bc803ae78b4aa71b847adfdf4d88bf7c0fb824ab Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B8ren=20Kottal?= <sk@ecreo.dk>
Date: Fri, 19 Jan 2024 13:21:17 +0100
Subject: [PATCH] Fix RTE block rendering failing (#15583)

Adds optional class attribute to regex responsible for parsing RTE values to block models
---
 .../PropertyEditors/ValueConverters/RichTextParsingRegexes.cs   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Umbraco.Infrastructure/PropertyEditors/ValueConverters/RichTextParsingRegexes.cs b/src/Umbraco.Infrastructure/PropertyEditors/ValueConverters/RichTextParsingRegexes.cs
index c7fa4e4592..75851ee856 100644
--- a/src/Umbraco.Infrastructure/PropertyEditors/ValueConverters/RichTextParsingRegexes.cs
+++ b/src/Umbraco.Infrastructure/PropertyEditors/ValueConverters/RichTextParsingRegexes.cs
@@ -4,6 +4,6 @@ namespace Umbraco.Cms.Core.PropertyEditors.ValueConverters;
 
 internal static partial class RichTextParsingRegexes
 {
-    [GeneratedRegex("<umb-rte-block(?:-inline)? data-content-udi=\"(?<udi>.[^\"]*)\"><!--Umbraco-Block--><\\/umb-rte-block(?:-inline)?>")]
+    [GeneratedRegex("<umb-rte-block(?:-inline)?(?: class=\"(.[^\"]*)\")? data-content-udi=\"(?<udi>.[^\"]*)\"><!--Umbraco-Block--><\\/umb-rte-block(?:-inline)?>")]
     public static partial Regex BlockRegex();
 }