It's pretty common for alpha-version or experimental software to be for a single browser only.

Then once you've locked down all the features for release, you go back and handle shims and multi-browser support, accessibility, and so forth.

I don't think Labs experiments being Chrome-only is something to complain about, even more so waitlist-only ones.

I thought Google was as proponent of standards so things like shims and multi-browser support weren't really a concern /s

I can't even tell what you're being sarcastic about. What's sarcastic about Safari or Firefox not having implemented a standard yet?

> What's sarcastic about Safari or Firefox not having implemented a standard yet?

Is it really a standard if there's only one implementation?

That makes sense. I just edited the comment so that it is (hopefully) less complaining and more factual.

on desktop maybe, on mobile even chrome does not work for me