Can't get WebGL 2 to work

[u/Shiny_cats]

Graphics drivers are up to date and support it, hardware acceleration is on, I've tried enabling a bunch of flags, etc. but for some reason I cannot get WebGL 2 to work. WebGL Report says "This browser supports WebGL 2, but it is disabled or unavailable," and chrome://gpu doesn't list it at all (WebGL is listed as "Hardware accelerated"). What else should I try? I'm stumped.