From b1ef36c670aa8e6308adff9b86ad04a57852d022 Mon Sep 17 00:00:00 2001
From: "mr. m" <mr.m@tuta.com>
Date: Sat, 21 Feb 2026 10:10:05 +0100
Subject: [PATCH] feat: Only load about:blank for secondary views when needed,
 b=no-bug, c=no-component

---
 src/zen/sessionstore/ZenWindowSync.sys.mjs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/zen/sessionstore/ZenWindowSync.sys.mjs b/src/zen/sessionstore/ZenWindowSync.sys.mjs
index 958ae6395..4a2e51a24 100644
--- a/src/zen/sessionstore/ZenWindowSync.sys.mjs
+++ b/src/zen/sessionstore/ZenWindowSync.sys.mjs
@@ -734,7 +734,11 @@ class nsZenWindowSync {
         // We do need to do this though instead of just unloading the browser because
         // firefox doesn't expect an unloaded + selected tab, so we need to get
         // around this limitation somehow.
-        if (!onClose) {
+        if (
+          !onClose &&
+          (aOtherTab.linkedBrowser?.currentURI.spec !== "about:blank" ||
+            aOtherTab.hasAttribute("busy"))
+        ) {
           this.log(`Loading about:blank in our tab ${aOtherTab.id} before swap`);
           aOtherTab.linkedBrowser.loadURI(Services.io.newURI("about:blank"), {
             triggeringPrincipal: Services.scriptSecurityManager.getSystemPrincipal(),