arni2033 Reporter
	Description • 8 years ago

>>>   My Info:   Win7_64, Nightly 48, 32bit, ID 20160310030242
STR:
1. Open https://www.pinterest.com/pin/26458716535727317/
2. Hover mouse over image "Sleep" at the top
3. Move mouse away from that image
4. Hover mouse over image "Illustrations" at the top
5. Move mouse away from that image

AR:  Images become pixelated at Steps 2-5.
ER:  Images shouldn't become pixelated.

This was regresseion between 2015-12-03 and 2015-12-04. Yep. ESR 45 is affected
Regression range (NI: I have no idea which bug broke this):
> https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=a8b4b4cdab7b9080bee35793078110ae7abfc3d2&tochange=0495c1a481af957371269cb73cd335ba6b08cf66

	Loic
	Comment 1 • 8 years ago

The culprit is clearly bug 927228. If you comment "background-size: cover", it works fine.

	Seth Fowler [:seth] [:s2h]
	Comment 2 • 8 years ago

I'm almost certain this would be fixed by bug 1183378. The problem is that we can't display the high-quality downscaled version of an image if it's layerized right now.

	Liz Henry (:lizzard Please n-i to RyanVM, jcristau, or pascal)
	Comment 3 • 8 years ago

Regression in 45, tracking. But wontfix for 46. 
Seth, would you agree it is too late in beta (coming into beta 6, now) to fix this in 46?

	u279076
	Comment 4 • 8 years ago

Arni, can you please confirm this also affects Firefox Nightly 49?

	arni2033 Reporter
	Comment 5 • 8 years ago

>>>   My Info:   Win7_64, Nightly 49, 32bit, ID 20160429030215
Yes.

	Ritu Kothari (:ritu) (Inactive, please n-i to RyanVM, jcristau, or pascal)
	Comment 6 • 8 years ago

Hi Milan, what about this one? I don't think this should block the release. Any chance of this getting fixed in Fx47?

	Milan Sreckovic [:milan] (needinfo for best results)
	Comment 7 • 8 years ago

(In reply to Ritu Kothari (:ritu) from comment #6)
> Hi Milan, what about this one? I don't think this should block the release.
> Any chance of this getting fixed in Fx47?

I'll find out about the chance for 47, but this is transient enough that I wouldn't block the release for it (sadly :)

	Ritu Kothari (:ritu) (Inactive, please n-i to RyanVM, jcristau, or pascal)
	Comment 8 • 8 years ago

Thanks Milan. This is now a wontfix for Fx47, if a patch is ready next week and deemed low risk, I would be willing to reconsider for Fx47.

	Sylvestre Ledru [:Sylvestre]
	Comment 9 • 8 years ago

We already shipped several releases with this regression, let's remove it from our radar.

	u279076
	Comment 10 • 8 years ago

Switching need-info to Milan since I don't believe Seth is working on this anymore.

	Milan Sreckovic [:milan] (needinfo for best results)
	Comment 11 • 8 years ago

I'll track this with bug 1183378.

	Andrew Overholt [:overholt]
	Comment 12 • 8 years ago

(In reply to Milan Sreckovic [:milan] from comment #11)
> I'll track this with bug 1183378.

Should this just be duped to that?

	Milan Sreckovic [:milan] (needinfo for best results)
	Comment 13 • 8 years ago

Good idea.