> I don't know if this is the case, exactly, with Chrome
As part of its security model, Chrome does something akin to rendering everything offscreen in an unprivileged process then passing that to the user-facing process.
Yeah, that sounds like it would do it. On the bright side, maybe they just have to double their offscreen buffer size.
I don't know if this is the case, exactly, with Chrome. I'm just saying it might not be wise to generalize from Chrome's appearance to retina-naive 3rd party apps in general.