Yeah this is an extremely long-standing issue with new pages in chrome defaulting to white. I've actually developed muscle memory to close my eyes when opening chrome/C3 for the first time lol. Apparently it's much more difficult to fix than one would think. I thought it only happened when entering a new domain, however...
Searching something along the lines of "white flash when opening chrome" will give you a lot of results, but no permanent fixes it seems.