Duck appears and disappears every few seconds

[cx20]

I tried to display Duck.gltf in Ashes v0.2.4.
However, there seems to be another problem. The console outputs a WebGL warning and the duck appears and disappears every few seconds.

Ashes v0.2.4 + Duck.gltf result:

[but0n]

Thanks for your feedback!
It should be fixed in the latest version.