Cocoa: Disable automatic tabbing for GLFW windows

Related to #1250.

README.md

@@ -262,6 +262,7 @@ information on what to include when reporting a bug.
 - [Cocoa] Added support for Vulkan window surface creation via
           [MoltenVK](https://moltengl.com/moltenvk/) (#870)
 - [Cocoa] Added support for loading a `MainMenu.nib` when available
+- [Cocoa] Disabled automatic window tabbing for created windows (#1250)
 - [Cocoa] Bugfix: Disabling window aspect ratio would assert (#852)
 - [Cocoa] Bugfix: Window creation failed to set first responder (#876,#883)
 - [Cocoa] Bugfix: Removed use of deprecated `CGDisplayIOServicePort` function

src/cocoa_window.m

@@ -885,6 +885,9 @@ static GLFWbool createNativeWindow(_GLFWwindow* window,
     [window->ns.object setDelegate:window->ns.delegate];
     [window->ns.object setAcceptsMouseMovedEvents:YES];
     [window->ns.object setRestorable:NO];
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 101200
+    [window->ns.object setTabbingMode:NSWindowTabbingModeDisallowed];
+#endif
 
     _glfwPlatformGetWindowSize(window, &window->ns.width, &window->ns.height);
     _glfwPlatformGetFramebufferSize(window, &window->ns.fbWidth, &window->ns.fbHeight);