From f557bfb7a18f84cfcbc922591d57c3f773546cb4 Mon Sep 17 00:00:00 2001
From: Jonathan Philipp <jonathan.philipp@networkteam.com>
Date: Thu, 9 Jul 2026 12:39:50 +0200
Subject: [PATCH] fix: remove outlook only styles from
 mjmlElementRendererImplementation

---
 .../FusionObjects/MjmlElementRendererImplementation.php    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Classes/Fusion/FusionObjects/MjmlElementRendererImplementation.php b/Classes/Fusion/FusionObjects/MjmlElementRendererImplementation.php
index 2b9cc37..bb8f715 100644
--- a/Classes/Fusion/FusionObjects/MjmlElementRendererImplementation.php
+++ b/Classes/Fusion/FusionObjects/MjmlElementRendererImplementation.php
@@ -84,8 +84,13 @@ public function evaluate()
             ->validationLevel(ValidationLevel::Skip)
             ->toHtml($mjml);
 
+        // Outlook-only rules are applyed conditionally
+        // (e.g. .mj-outlook-group-fix, which forces mj-group columns to width:100% and breaks side-by-side layout everywhere else).
+        // We remove them to don't get the styles for outlook applied, which breaks mj-group in all other browsers.
+        $htmlWithoutMsoConditionals = preg_replace('/<!--\[if[^\]]*mso[^\]]*\]>[\s\S]*?<!\[endif\]-->/', '', $html);
+
         preg_match('/<body[^>]*>([\s\S]*?)<\/body>/', $html, $bodyMatches);
-        preg_match_all('/<style[^>]*>([\s\S]*?)<\/style>/', $html, $styleMatches);
+        preg_match_all('/<style[^>]*>([\s\S]*?)<\/style>/', $htmlWithoutMsoConditionals, $styleMatches);
 
         $body = $bodyMatches[1];