While unsure about the root cause yet, these instances expose 'NSOpenGLLayer.Attach: Re-Queue' in MacOSXCGLContext's AttachGLLayerCmd.run(..) i.e. unable to lock the GL surface/context. The last life sign is a GLCanvas reshape though .., i.e. GLFBODrawableImpl.reset(newSamples 0): END ... GLCanvas.sizeChanged: (AWT-EventQueue-2): 300x300 - surfaceHandle 0x7fa1da654ac0
Some tests expose a 'last life sign': NSOpenGLLayer.Attach: Re-Queue, drawableHandle 0x7fb0cd617900 - AWT-AppKit
Not reproducible after restart of OSX test machine!