From 69fa0c2e09d41cb999194abcc1c3238bbed34071 Mon Sep 17 00:00:00 2001
From: Raymond Hill <rhill@raymondhill.net>
Date: Mon, 25 Aug 2025 11:55:36 -0400
Subject: [PATCH] [mv3] Fix regression in managing redirect rules

Regression cause by:
https://github.com/gorhill/uBlock/commit/fad0af591f3d54fe1af85118928060fba3b7096a
---
 platform/mv3/extension/js/ruleset-manager.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/mv3/extension/js/ruleset-manager.js b/platform/mv3/extension/js/ruleset-manager.js
index b51af9c46..24db8812e 100644
--- a/platform/mv3/extension/js/ruleset-manager.js
+++ b/platform/mv3/extension/js/ruleset-manager.js
@@ -209,7 +209,9 @@ async function updateRedirectRules(currentRules, addRules, removeRuleIds) {
     for ( const rule of currentRules ) {
         if ( rule.id >= SPECIAL_RULES_REALM ) { continue; }
         if ( rule.action.type !== 'redirect' ) { continue; }
-        if ( rule.action.redirect.extensionPath === undefined ) { continue; }
+        if ( rule.action.redirect.extensionPath === undefined ) {
+            if ( rule.action.redirect.regexSubstitution === undefined ) { continue; }
+        }
         removeRuleIds.push(rule.id);
     }