From 5368adcd29754939e6c283198ef6b1c122293815 Mon Sep 17 00:00:00 2001
From: Tunglies <77394545+Tunglies@users.noreply.github.com>
Date: Wed, 27 May 2026 19:43:41 +0800
Subject: [PATCH] macos: avoid duplicate appearance sync on tab focus

Close #12825

Skip the initial emissions from the focused surface appearance publishers after a tab focus change. The focused surface is already synced immediately, so the initial Combine values only repeat the same titlebar and background updates. Subsequent derived config and OSC background changes still resync the window appearance.
---
 macos/Sources/Features/Terminal/TerminalController.swift | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/macos/Sources/Features/Terminal/TerminalController.swift b/macos/Sources/Features/Terminal/TerminalController.swift
index bcccef8f9..ee6312ab9 100644
--- a/macos/Sources/Features/Terminal/TerminalController.swift
+++ b/macos/Sources/Features/Terminal/TerminalController.swift
@@ -1410,9 +1410,11 @@ class TerminalController: BaseTerminalController, TabGroupCloseCoordinator.Contr
 
         // We also want to get notified of certain changes to update our appearance.
         focusedSurface.$derivedConfig
+            .dropFirst()
             .sink { [weak self, weak focusedSurface] _ in self?.syncAppearanceOnPropertyChange(focusedSurface) }
             .store(in: &surfaceAppearanceCancellables)
         focusedSurface.$backgroundColor
+            .dropFirst()
             .sink { [weak self, weak focusedSurface] _ in self?.syncAppearanceOnPropertyChange(focusedSurface) }
             .store(in: &surfaceAppearanceCancellables)
     }