A workaround patch is attached. On Fedora 9, TkMan gives the following error.
tab stop "-13" is not at a positive distance
tab stop "-13" is not at a positive distance
while executing
"$t tag configure info -tabs [list 0.3i $rm right]"
(procedure "manManTabSet" line 10)
invoked from within
"manManTabSet .man"
(command bound to event)