I also experience the same issue on mac time to time.
Situation is the same as with previous implementation based on OSWindow.

Cheers,
Alex

On 2 December 2016 at 17:27, Sean P. DeNigris <sean@clipperadams.com> wrote:
Tudor Girba-2 wrote
> Could you describe the situation

There was no clear cause. While playing with the examples, suddenly when
Bloc opened an external window, the contents were black, and existing
windows were uncloseable via the title bar button.


Tudor Girba-2 wrote
> the concrete path that fixed it

BlUniverse reset



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Cheers,
Sean
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