Tried on a couple of devices with Firefox, the Downloading runtime bit takes ages. On Android firefox on my poor old Nokia Android phone it's way too slow to t

Tried on a couple of devices with Firefox, the Downloading runtime bit takes ages. On Android firefox on my poor old Nokia Android phone it's way too slow to try, on rotating the UI size hasn't caught up for a few seconds and everything stretches. Edit: I got Failed to create WebGL context: WebGL creation failed: (Feature_Failure_EGL_Create) Exhausted GL driver options. (FEATURE_FAILURE_WEBGL_EXAUSTED_DRIVERS) TypeError: a is null. The Ubuntu is in qemu but should have 3D support, as others mentioned there should be some error surfacing, not just continuing to show the splash screen forever. On Firefox on Ubuntu, I'm still waiting after a couple of minutes for it to start, so might try again later.