Aptana Studio 3 and HTML5 Support ?

One of the benefits in HTML5 is simplifications:

However Apatana (claiming HTML5 support)
made me disapointed
on my first trial:

<link rel="stylesheet" href="/boilerplate/styles/sample.css" />

This valid HTML5 construction results in warning:

link lacks "type" attribute 

Since I hate warnings and
I hate writing any extra code
I supressed the warning in
Window/Preferences/Aptana/validation/HTML
thax for that option at least.

Or am I doing something wrong ?

UPDATE:
Nothing wrong, after private discussion with aptana team they resond with:
WE HAVE TICKET OPENED FOR THIS:
https://aptana.lighthouseapp.com/projects/35272/tickets/1860.

however I have no account to see the ticket ;-)