That isn't pod behavior, its another bug in pod2html.

I would use this example for the report 


=pod

=head1 one

=head2 two

=head3
three on second line

=head4 four on one line

=head4 four
on two lines

=cut

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In reply to Re: Apparently inconsistent POD behaviour by Anonymous Monk
in thread Apparently inconsistent POD behaviour by davies

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