I don't mean to hijack the problem you're encountering. It sounds like it may be browser related and at that related to the version of the browser.
That said, I'm more concerned about those dates on those images. I'm not sure why Mapillary accepts future dates. More so, I'm not sure how you're getting something with future dates on your end. GPS is really just a fancy clock. Any computers making use of it should be pretty accurate, maybe minus an issue with getting the time zone correct, with the date and time.
Anyway, as for the browser problem have you tossed up a thread for it over at Github? That seems to get the developers attention better.