Tor Browser waits for the page to fully finish loading before showing Onion Location pill

I just loaded a nytimes.com page, and it had a bunch of little tracking/whatever links embedded in it. It took 30 seconds or something for one of those extraneous links to finish loading. The browser had rendered (most of) the page quite early in that 30 seconds, but the purple Onion-Location pill didn't show up until the page had entirely and completely finished rendering.

We knew there was an onion-location header when we got the headers for the main html response, so we knew very early in the process. Does that mean we can put up the pill (or automatically switch, if that's what the user has configured) much earlier too?