InsetBranch::InsetBranch(Buffer const & buf, InsetBranchParams const & params)
: InsetCollapsable(buf), params_(params)
-{}
+{
+ // override the default for InsetCollapsable, which is to
+ // use the plain layout.
+ DocumentClass const & dc = buf.params().documentClass();
+ paragraphs().back().setDefaultLayout(dc);
+}
InsetBranch::~InsetBranch()