From 7f217fc3266db877d118b028b03f05e69e1d7e52 Mon Sep 17 00:00:00 2001
From: Qwerasd <qwerasd205@users.noreply.github.com>
Date: Sun, 4 Feb 2024 14:22:44 -0500
Subject: [PATCH] fix(macOS): Hide titlebar separator line in native
 fullscreen.

---
 macos/Sources/Helpers/FullScreenHandler.swift | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/macos/Sources/Helpers/FullScreenHandler.swift b/macos/Sources/Helpers/FullScreenHandler.swift
index 2bb716c00..8046b7b55 100644
--- a/macos/Sources/Helpers/FullScreenHandler.swift
+++ b/macos/Sources/Helpers/FullScreenHandler.swift
@@ -20,6 +20,8 @@ class FullScreenHandler {
                 leaveFullscreen(window: window)
                 isInNonNativeFullscreen = false
             } else {
+                // Restore titlebar separator style. See below for explanation.
+                window.titlebarSeparatorStyle = .automatic
                 window.toggleFullScreen(nil)
             }
             isInFullscreen = false
@@ -29,6 +31,10 @@ class FullScreenHandler {
                 enterFullscreen(window: window, hideMenu: hideMenu)
                 isInNonNativeFullscreen = true
             } else {
+                // The titlebar separator shows up erroneously in fullscreen if the tab bar
+                // is made to appear and then disappear by opening and then closing a tab.
+                // We get rid of the separator while in fullscreen to prevent this.
+                window.titlebarSeparatorStyle = .none
                 window.toggleFullScreen(nil)
             }
             isInFullscreen = true