Fix streamer mode button being always visible on Windows (#4690)

Fixes #4682

CHANGELOG.md

@@ -3,7 +3,7 @@
 ## Unversioned
 
 - Minor: Nicknames are now taken into consideration when searching for messages. (#4663)
-- Minor: Add an icon showing when streamer mode is enabled (#4410)
+- Minor: Add an icon showing when streamer mode is enabled (#4410, #4690)
 - Minor: Added `/shoutout <username>` commands to shoutout specified user. (#4638)
 - Minor: Improved editing hotkeys. (#4628)
 - Minor: The input completion and quick switcher are now styled to match your theme. (#4671)

src/widgets/Window.cpp

@@ -197,6 +197,9 @@ void Window::addCustomTitlebarButtons()
     this->signalHolder_.managedConnect(getApp()->streamerModeChanged, [this]() {
         this->updateStreamerModeIcon();
     });
+
+    // Update initial state
+    this->updateStreamerModeIcon();
 }
 
 void Window::updateStreamerModeIcon()