long lines inside verbatim block (#v+/#v-) grabble last but one line

when scrolling down linewise
<news://news.software.nntp/[email protected]>
the artcile it "messes" up the last but one line in cooked mode
(not in raw mode) when it reaches the long-line inside a verbatim block
(#v+/#v-) (80x24 xterm, tinrc.wrap_column=0):

#v+
	if (preg_match('/^(comp|humanities|misc|news|rec|sci|soc|talk)\./', $groupName))
#v-

the "upName))" string appears in the last but one line (the line usualy is
blank) and stays there till the screen is refreshed ('^L').

anyone willing to look at this?