Why do I have to reload now?

Does no one else get the massive 'Reload Now' banner whenever they switch Chrome tabs after a Mac goes to sleep? I can see it printing behind the massive banner, it clearly knows it need to reload otherwise why the big banner, so just reload, don't make me do it..? I'm sure there's a logical answer, and it just doesn't make sense to me, but hay, have to ask..

Does it also do that in safe mode?

Having problems getting any of them to do it now (I must be missing something), I'll leave one in safe mode and see what happens next time they do it..

Managed to get it to do it, 3 had the banner up, 2 didn't, the one in safe mode was one of the two that didn't, but I'm fairly sure the one other one that didn't has done in the past..