Reply to post: Re: FFS FF

Firefox 39 bites four critical bugs

Michael Wojcik Silver badge


When zooming in on a Google Map, it would completely flip the entire map on it's head so that the map, all text and even any map markers were upside down (not rotated but mirrored, so even standing on my head to view it wouldn't have been worthwhile).

Interesting. Sounds like a sign error in the rendering - inverting the sign of both dimensions in a 2D Cartesian coordinate system would give you this "flipped and mirrored" effect - possibly due to underflow.

I've never looked at the source of a Google Maps page. Are they doing their own rendering using Canvas or some such? Just wondering if maybe this is a Google bug that only shows up under some ECMAScript implementations and particular conditions (e.g. resizing with a viewport of sufficient size).

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