From 48822bfa7b37e0ae0120f1123f78474bf4e53bfb Mon Sep 17 00:00:00 2001
From: Ruslan Lekhman <lekhman112@gmail.com>
Date: Tue, 7 Oct 2025 15:22:02 -0600
Subject: [PATCH] fix(material/button): disabled appearance when the parent
 <fieldset> is disabled

close #31500
---
 src/material/button/_button-base.scss | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/material/button/_button-base.scss b/src/material/button/_button-base.scss
index 644e8b4af773..b99c16fb94cd 100644
--- a/src/material/button/_button-base.scss
+++ b/src/material/button/_button-base.scss
@@ -107,6 +107,7 @@
 @mixin mat-private-button-disabled() {
   // `[disabled]` shouldn't be necessary, but we keep it to maintain
   // compatibility with apps setting it through host bindings.
+  fieldset:disabled &,
   &[disabled],
   &.mat-mdc-button-disabled {
     cursor: default;