Work around strange SwiftUI behavior in "older" macOSen.

The Quick Terminal would not appear anymore, as somewhere
in the framework the Quick Terminal Window's geometry
gets corrupted when the window is added to the UI.

This works around by caching the windows geometry and
reusing it afterwards

macos/Sources/Features/QuickTerminal/QuickTerminalController.swift

@@ -111,12 +111,24 @@ class QuickTerminalController: BaseTerminalController {
         // Setup our initial size based on our configured position
         position.setLoaded(window)
 
+        // Upon first adding this Window to its host view, older SwiftUI
+        // seems to have a "hiccup" and corrupts the frameRect,
+        // sometimes setting the size to zero, sometimes corrupting it.
+        // We pass the actual window's frame as "inital" frame directly
+        // to the window, so it can use that instead of the frameworks
+        // "interpretation"
+        if let qtWindow = window as? QuickTerminalWindow {
+            qtWindow.initialFrame = window.frame
+        }
         // Setup our content
         window.contentView = NSHostingView(rootView: TerminalView(
             ghostty: self.ghostty,
             viewModel: self,
             delegate: self
         ))
+        if let qtWindow = window as? QuickTerminalWindow {
+            qtWindow.initialFrame = nil
+        }
 
         // Animate the window in
         animateIn()

macos/Sources/Features/QuickTerminal/QuickTerminalWindow.swift

@@ -29,4 +29,14 @@ class QuickTerminalWindow: NSPanel {
         // We don't want to activate the owning app when quick terminal is triggered.
         self.styleMask.insert(.nonactivatingPanel)
     }
+    var initialFrame: NSRect? = nil
+    override func setFrame(_ frameRect: NSRect, display flag: Bool) {
+        // Upon first adding this Window to its host view, older SwiftUI
+        // seems to have a "hiccup" and corrupts the frameRect,
+        // sometimes setting the size to zero, sometimes corrupting it.
+        // If we find we have cached the "initial" frame, use that instead
+        // the propagated one throught the framework
+        super.setFrame(initialFrame ?? frameRect, display: flag)
+    }
+
 }