Comment 2 for bug 315731

Yep, confirmed. :(

Can directly see it happening in your screencast. ;-> I think that's probably the very best example of "how to do a bug report" that I've ever seen btw. :)

From a code perspective, it looks like there's something going wrong with the function(s) that do the zoom, and then the result is getting cached from that point onwards. :(

Shouldn't be too hard to fix that one. :)