Thanks for the response Max. In this case it’s not a high DPI screen. It’s hard to consistently reproduce… it seems like the rendering intermittently fails. We’ve heard from several customers that have experienced this so it’s not related to a single machine.
There is another ticket about intermittent failing of the layers API, but what I’m describing here is essentially a silent failure, in that it doesn’t throw an error.
I’ll update this if I can find a consistent way to reproduce.