yelp can't display "banner"s manual page

[Սահակ]

to reproduce this start yelp from a terminal and then goto: "Manual
Pages"->"Games"->"banner"
banner's manual pages doesn't display and the following appears on the terminal:

embed_open_uri_cb uri=man:/usr/share/man/man6/banner.6.gz

(yelp:18251): Yelp-WARNING **: No rule matching the tag '\" The'

(yelp:18251): Yelp-WARNING **: No rule matching the tag '\" This'

(yelp:18251): Yelp-WARNING **: No rule matching the tag '\" California,'

(yelp:18251): Yelp-WARNING **: No rule matching the tag '\" From:'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Nm'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Nd'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Nm'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Op'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Op'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Op'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Ar'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Nm'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Ar'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Tn'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'Fl'

(yelp:18251): Yelp-WARNING **: No rule matching the tag 'An'

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported into
our bug tracking system, but please feel free to report any further bugs you find.

This bug has been marked as a duplicate of bug 20382.