Example with "to much" titles in output

If one uses several formalpara in example, the  HTML stylesheets (didn't 
check for the FO stylesheets) produce for this example a toc entry and 
xref text with all titles (also those of formalpara) concatenated in one 
string. Seems there is no constraint in the title processing of examples 
to stick with first title (as immediate child of example).

Should I file this as bug?

Regards,
Georges