each asset now sets its own RawHeadTags. There is no need for Layout to do it anymore. It actually causes the Raw Head Tags to appear twice when viewed from the parent

docs/changelog/7.x.x.txt

@@ -1,4 +1,5 @@
 7.3.14
+ - fix: Duplicate Metadata (perlDreamer Consulting, LLC)
 
 
 7.3.13

lib/WebGUI/Asset/Wobject/Layout.pm

@@ -170,7 +170,6 @@ sub prepareView {
 			foreach my $child (@{$children}) {
 				if ($asset eq $child->getId) {
 					unless (isIn($asset,@hidden) || !($child->canView)) {
-						$self->session->style->setRawHeadTags($child->getExtraHeadTags);
 						$child->prepareView;
 						if ($i > $numPositions || $i==1) {
 							push(@placeHolder1, $child);