Was about to report the very same thing, started happening a couple days ago although a little different: green instead of blue.
Up until the new version terrain was loaded first, then the buildings, then all icons hovering above buildings like the little stars from polivating or crates, coins, whatever signals a building has ended its production.
Now terrain is loaded last, takes quite a lot of time to do so (like 3 minutes, perhaps more) and meanwhile everything else requires more time to be done (be it collecting, going to expeditions, opening tech tree etc.)
I use Firefox (no html5) and this happened in the past as well, right after a new version was implemented (can't remember which one).