In "sshd_config" man page, the "PubkeyAuthentication" directive is missing from the list of directives allowed in a "Match" block. A simple look at "servconf.c" confirms that "PubkeyAuthentication" is actually allowed and working in "Match" blocks.
Fixed, thanks.
Mass move of RESOLVED bugs to CLOSED now that 5.3 is out.
With the release of 5.4p1, this bug is now considered closed.