Have it fixed in my tree now,but too tried to pull out the diff.

Created attachment 30789 [details]
patch (w/some debug output that needs removing)

The attached fixes it + makes a mthod name saner.

SVN commit 922955 by orlovich:

Some fixes for our stylesheets collection to fix  http://www.webtoolkit.eu/wt:

1) Make sure that we create a stylesheet object even for empty <style> elements
2) Keep track of dirtiness of stylesheets list separately from that of the style selector,
and make sure to rebuild it if the collection is accessed. While I am at it, 
instead of having confusingly similarly named recalcStyleSelector and 
rebuildStyleSelector, have rebuildStyleSelector and rebuildStyleSheetList, 
the difference between which should be evident. Also make them private.
(Though updateStyleSelector is not renamed, so things aren't 100% clear, still)

BUG: 182230


 M  +15 -0     css/css_stylesheetimpl.cpp  
 M  +9 -1      css/css_stylesheetimpl.h  
 M  +11 -0     html/html_headimpl.cpp  
 M  +2 -0      html/html_headimpl.h  
 M  +27 -12    xml/dom_docimpl.cpp  
 M  +8 -2      xml/dom_docimpl.h  


WebSVN link: http://websvn.kde.org/?view=rev&revision=922955

SVN commit 922959 by orlovich:

Merged revision 922955:
Some fixes for our stylesheets collection to fix  http://www.webtoolkit.eu/wt:

1) Make sure that we create a stylesheet object even for empty <style> elements
2) Keep track of dirtiness of stylesheets list separately from that of the style selector,
and make sure to rebuild it if the collection is accessed. While I am at it, 
instead of having confusingly similarly named recalcStyleSelector and 
rebuildStyleSelector, have rebuildStyleSelector and rebuildStyleSheetList, 
the difference between which should be evident. Also make them private.
(Though updateStyleSelector is not renamed, so things aren't 100% clear, still)

BUG: 182230

 M  +15 -0     css/css_stylesheetimpl.cpp  
 M  +9 -1      css/css_stylesheetimpl.h  
 M  +11 -0     html/html_headimpl.cpp  
 M  +2 -0      html/html_headimpl.h  
 M  +27 -12    xml/dom_docimpl.cpp  
 M  +8 -2      xml/dom_docimpl.h  


WebSVN link: http://websvn.kde.org/?view=rev&revision=922959

SVN commit 922964 by orlovich:

Regression test for #182230

CCBUG:182230


 A             baseline/ecma/stylesheet-collection.html-dom  
 AM            baseline/ecma/stylesheet-collection.html-dump.png  
 A             baseline/ecma/stylesheet-collection.html-render  
 A             tests/ecma/empty.css  
 A             tests/ecma/stylesheet-collection.html  


WebSVN link: http://websvn.kde.org/?view=rev&revision=922964