FadeIn/SlideDown/Show are not run if 'display' is not 'none'

[Didjo]

When applying a fadeOut on a div for 500ms, but – after 300ms – apply a fadeIn :

• if a stop(1,1) is called before fadeIn, the div will fadeIn back to opacity 100%.
• but if a stop(1,0) is called, fadeIn fail (surely because div is already display:block when called), but it should fade to opacity 100%, or we could be at least able to force it.

See example here : ​http://jsfiddle.net/Didjo/4v8Uk/ Discussion here : ​http://stackoverflow.com/questions/14633382/jquery-stop1-1-launches-next-animation-but-not-stop1-0

[dmethvin]

Corrected repro: ​http://jsfiddle.net/dmethvin/4v8Uk/18/

Please don't pass invalid arguments to .stop(), it takes two Booleans.

[dmethvin]

Duplicate of #13483.