Mac window disconnected from titlebar

[aduros]

This strange bug was reported by a user on Mac: aduros/wasm4#327

It seems to do with going in and out of fullscreen. Opening it here in case others have seen it or know any workarounds.

[kippesp]

I'm evaluating minifb and decided to look further into this issue. I was able to duplicate this behavior on Monterey when using the Metal API. It also duplicates if I grow the window size. A build without Metal does not duplicate the issue.

As a work around, the resize control can be disabled which will also disable the full-screen window control. For my application, I'll go this route since I need to render a pixel buffer that is a fixed size.

I did some research on the behavior and think this is related to having the MTKView as the windows immediate content. Although I didn't solve it, I think if the MTKView were placed in another view or layer, the outer view would maintain the titlebar connection.

I'm afraid I don't know minifb that well across OSes to say what behavior is desired.

See https://localcoder.org/resizing-mtkview-scales-old-content-before-redraw
See https://developer.apple.com/documentation/appkit/nsstackview

[Darky-Lucera]

Thanks for the information