Using mustache expansion in block title introduces paragraph elements
When using mustache substitution, e.g.
## {{title}} { align="center" .xx-large }
a sufficiently long title
variable results in the following HTML:
<div class="box">
<h2>Agent-based Biological Cell Simulations for Self-Organizing</h2>
<p>Morphogenesis { align=“center” .xx-large }</p>
</div>
This is obviously not intended.