Visualization empty

[upb-lea]

Visualization empty

[stheid]

And its also important to call env.close(). Otherwise the draw window never closes and closing it manually will kill the jupter kernel.

workarround to keep simulation open and only close it manually:

such that the some console input is needed before the visualization is closed.

[wkirgsn]

We're actively investigating this issue.
There are apparently some robustness problems with using render() in orders that were not initially intended.

For now, please call render() after each call to step() to see a continuously rendered diagram.