I've hit an oddity and would like some indication as to whether it's a bug.

See http://jsbin.com/hijat/1/edit. This defines two elements: the first 
element colors certain content nodes in red, and second element simply 
reprojects its content into an instance of the first element.

My question pertains to the semantics of ::content styling. Previously, I'd 
assumed that ::content matched a single <content> insertion point. Lately, 
however, I've noticed that ::content seems to match *any number* of content 
insertion points. That is, it can be used to style not only directly 
distributed content, but redistributed content as well. That's awesome! I 
need that in a number of places.

However, the jsbin shows at least one case where styling doesn't seem to 
work the same when considering redistributed content. I can't actually find 
a spec for the ::content selector anywhere (where is the real spec?), only 
some very high-level stuff on polymer-project.org, so I can't pin down how 
this selector's supposed to work.

Please let me know if this is a bug and I can file it. (The Blink team 
tends to want bug repro cases to *not* use Polymer, which creates a chore 
in a case like this to manually compile Polymer markup into JavaScript, so 
I've held off on filing a bug until it's likely I've actually got a real 
bug here.)

Follow Polymer on Google+: plus.google.com/107187849809354688692
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