Black canvas effect on mobile and in a long running Chrome session

[Ilya]

Hi all,
I've encountered an effect where the entire canvas goes black, in two
distinctly different scenarios:
1) Long running Chrome session (not sure about Firefox, did not see it
there yet). Restarting the browser helps, but simple reload of a page
does not. Are we running into some sort of resource exhaustion issue
here?
2) On mobile Firefox running on Android, but only if I try to display
geometry with textures. Without textures, all is well. I can
reproduce this by opening one of the texture samples (e.g.
http://scenejs.org/dist/v2.0.0/extr/examples/animated-texture/index.html)
Any ideas? Could this be the "lost context" issue that Lindsay
recently wrote about?
Thanks
- Ilya