From 1c1d734e65fe67584414ed86b12423a79206514e Mon Sep 17 00:00:00 2001
From: Kristiyan Kostadinov <crisbeto@abv.bg>
Date: Tue, 29 Apr 2025 10:04:55 +0200
Subject: [PATCH] fix(cdk/overlay): reduce touch interaction delay on backdrop

Sets `touch-action: manipulation` on the overlay backdrop to reduced the tap delay on touch devices.

Fixes #30965.
---
 src/cdk/overlay/_index.scss | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/cdk/overlay/_index.scss b/src/cdk/overlay/_index.scss
index 8b351bfca653..6952e9dcb9ba 100644
--- a/src/cdk/overlay/_index.scss
+++ b/src/cdk/overlay/_index.scss
@@ -95,6 +95,9 @@ $backdrop-animation-timing-function: cubic-bezier(0.25, 0.8, 0.25, 1) !default;
     -webkit-tap-highlight-color: transparent;
     opacity: 0;
 
+    // Removes the tap delay on touch devices (see #30965).
+    touch-action: manipulation;
+
     @include _conditional-layer($wrap-customizable-styles) {
       z-index: $overlay-backdrop-z-index;
       transition: opacity $backdrop-animation-duration $backdrop-animation-timing-function;