1208579 - Favicon for Vidyo Replay URL is much smaller in Firefox 44

Status: RESOLVED INVALID

(Core :: Graphics: ImageLib, defect)

Description

[u279076]

Attachment: Screen Shot 2015-09-25 at 11.42.10 AM.png

See attached screenshot. The favicon on https://vreplay.mozilla.com/replay/showRecordingExternal.html?key=tAc6EvvWcWjzuCU is much smaller in the latest Firefox Nightly than it is in Firefox 41 or Chrome. This would appear to be a regression. I'll start looking for a regression window shortly.

Note, the actual favicon is a 64x64 pixel X-ICON file:
https://vreplay.mozilla.com/replay/themes/vidyo/i/themeicons/vidyo.ico

Comment 1

[u279076]

Regression is from Firefox 43:
> https://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=4313752f69956ae248bd4e7ff3913c8dd4252698&tochange=ccd6b5f5e544c1d708849144943a776941bd3794
> https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=a08287c70962145364545c1a72135f9338544e9e&tochange=159d5d2946d35063ea553e6f9cc081db547f7985

Blame either bug 1196066 or bug 1201796.

Comment 2

[u279076]

Seth, those are your bugs. Can you look in to this?

Comment 3

[Seth Fowler [:seth] [:s2h]]

ICO files can contain multiple resources with different sizes. This one includes twelve variations. Bug 1201796 means that we now choose best matching resource, in terms of size, for the area on the screen into which we're drawing the ICO file.

Unfortunately, the resources in this ICO are not resized versions of the icon; they instead contain the same sized icon, placed on progressively bigger canvases. Thus when we choose a larger resource to draw, the visual effect is that the icon seems to get smaller!

There's not really a bug here; it's just that Vidyo needs to fix their ICO file so that the different resources actually contain resized versions of the icon, or just remove the extra resources. I'll send them an email and point them to this bug.