From 33382159469c1bc620cbe43c971c1b3c06a418c7 Mon Sep 17 00:00:00 2001
From: Dan Walmsley <dan@walms.co.uk>
Date: Mon, 6 Jan 2020 10:01:06 -0300
Subject: [PATCH] fixes the black window corners on OSX.

---
 native/Avalonia.Native/src/OSX/window.mm | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/native/Avalonia.Native/src/OSX/window.mm b/native/Avalonia.Native/src/OSX/window.mm
index 908b9e1022..3acc5e365b 100644
--- a/native/Avalonia.Native/src/OSX/window.mm
+++ b/native/Avalonia.Native/src/OSX/window.mm
@@ -1283,6 +1283,9 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
     _closed = false;
     
     _lastScaling = [self backingScaleFactor];
+    [self setOpaque:NO];
+    [self setBackgroundColor: [NSColor clearColor]];
+    [self invalidateShadow];
     return self;
 }