The bug affects rendering code snippets (breaks indent), monotype text at the beginning of the lines, links at the beginning of the lines etc.
Consider following HTML:
<html><head><title>Title</title></head>
<body>
<h1>Dummy</h1>
<tt>
<font color="#0000FF">1234</font> a<br />
<font color="#0000FF">1234</font> b<br />
<font color="#0000FF">1234</font> c<br />
</font></tt>
</body>
It used to render like this (ommiting the heading and colors):
Now it renders:
htmldoc -f out.pdf -t pdf14 --no-title --no-toc in.htm