Window doesn't draw properly in macOS Mojave (SDL bug)

Created by: chalonverse

More info on the bug here: https://discourse.libsdl.org/t/macos-10-14-mojave-issues/25060/6 Bugzilla here: https://bugzilla.libsdl.org/show_bug.cgi?id=4272 Bugfix here: https://hg.libsdl.org/SDL/rev/55489adbb75c

TODO: Need to rebuild SDL libraries from source with patch applied (at least for macOS)