Converting the strftime man page generates an image

[agateau-g]

Converting the strftime man page creates a file named grohtml-<somenumber>.png in the HOME dir. It is generated when parsing this markup:

.TS
allbox;
lb lb lb
l l l.
Interface   Attribute   Value
T{
.BR strftime ()
T}  Thread safety   MT-Safe env locale
.TE

When viewing the man page with man, this markup produces a table like this:

Interface	Attribute	Value
strftime()	Thread safety	MT-Safe env locale