directive in slots should be binded into "in-dom" structure of parent component

[trailskr]

Vue.js versions

1.0.26, 2.0.0-rc.3

Reproduction Link

fiddle 1.0.26
fiddle 2.0.0-rc.3

What is Expected?

expected dom structure will be the same in directive bind hook and after tick from it

What is actually happening?

in bind hook <comp /> is #docuement-fragment (or null in 2.0)
after tick from bind it <div><p>...</p></div>

I know, may be it'is not a bug. Slots compiles under parent of component that has slots (root instance in this case), and may be it is not possible to bind directives after slot component is "in dom" but who knows?

[yyx990803]

Implemented in 2.0, this will likely be a wontfix in 1.x, but we will revisit it when working on 1.1.

[yyx990803]

Note: the behavior is introduced in rc.4 but will be reverted in next release. Instead, a new custom directive hook inserted is introduced, which will be called when the element has been inserted into a parent node.