Domino Code Assist 1.3.0 (DCA)
In the demo DCA notebook it is possible to publish a demo app.
In some cases this app will fail to publish and a blank screen will be seen when previewing the app.
This is a product defect. The exact root cause is unknown and still under investigation.
At the moment no workaround is known. The demo app does appear to publish with better frequency in Domino Standard Environments although you may still experience the demo app failing even when using the Domino Standard Environments.