Bug 71584

Summary:	Bug when animating background-size without initial background-size declaration
Product:	WebKit	Reporter:	Lea Verou <lea>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED WORKSFORME
Severity:	Normal	CC:	eoconnor, gsnedders, menard, shanestephens, simon.fraser
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified
URL:	http://jsfiddle.net/leaverou/v2LWs/4/show
Bug Depends on:
Bug Blocks:	93136

Description Lea Verou 2011-11-04 13:38:04 PDT

When animating background-size, without a background-size declaration in the main rule, the animation doesn't get applied. 

It gets applied if a background-size declaration is also used in the same rule, with a value different than contain or cover. Even auto or 0 will work.

Firefox does not have this issue.

Comment 1 Simon Fraser (smfr) 2012-12-12 08:29:38 PST

I seem to recall this being discussed on www-style.

Comment 2 Sam Sneddon [:gsnedders] 2021-04-22 06:30:08 PDT

Presumably fixed some time in the past decade.