Hi, Apologies if this has been answered elsewhere though I'm yet to find anything on it. I've created a new Custom Sheet Sandbox game and seeing the classnames are no longer prepended with "sheet-", is this expected? I've tested the same HTML and CSS on an earlier created game and those games keep the prepended "sheet-" in the classname. I've looked in the documentation though can't see anything about this, and tried recreating this in both the 'normal' and another Sandbox game and seeing the same results. OLD Game NEW Game Is it now expected that CSS no longer requires a sheet- prefix on classnames and the documentation needs updating or is this a bug? Thanks, James