The first line after the '=begin item' is properly formatted, but formatting code in following paras within the block is ignored.
Given:
=begin item
C<foo>
B<foo> is...
=end item
that rakudoc is rendered as:
UPDATE
But if there is no leading space, it works properly:
Given:
=begin item
C<foo>
B<foo> is...
=end item
that rakudoc is rendered as: