Is there a way to opt certain windows out of tiling in macOS 15?
I'm supporting a beloved feature called App Veil[1], which places windows below others that are not owned by the host application. These windows are passive: they don't allow mouse events and cannot be resized or moved.
With the new tiling feature on macOS 15, the window manager will rearrange these windows if you choose an arrangement option (such as Arrange Left & Right).
Ideally, I'd like to opt out of this behavior altogether for these windows, but I couldn't find a way to do that. The only thing I've found was that I could set a high window level, but that's not really an option as it's important to preserve the ordering so that the windows are directly below the out-of-process windows.
1: https://tuple.app/app-veil