From 41e0e7c688cb0073e6034bdf57ab359383aad5fc Mon Sep 17 00:00:00 2001
From: lwouis <lwouis@gmail.com>
Date: Sun, 8 Feb 2026 16:57:53 +0100
Subject: [PATCH] perf: prevent costly window recursive views update

---
 src/ui/main-window/ThumbnailsView.swift | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ui/main-window/ThumbnailsView.swift b/src/ui/main-window/ThumbnailsView.swift
index 7355d333..57a800b4 100644
--- a/src/ui/main-window/ThumbnailsView.swift
+++ b/src/ui/main-window/ThumbnailsView.swift
@@ -384,6 +384,10 @@ class ScrollView: NSScrollView {
 
 class FlippedView: NSView {
     override var isFlipped: Bool { true }
+    // Prevent AppKit from recursively marking all NSControl subviews as needsDisplay during makeKeyAndOrderFront
+    // Titles, Icons, and Traffic Icons would otherwise take lots of resource to update
+    // We update everything explicitly, so this can be disabled
+    @objc func _windowChangedKeyState() {}
 }
 
 enum Direction {