Not correct update Entity in setEntry

[gorets]

if the Entity exists and you need an update

PoParser line 449
if ($msgid !== $entry['msgid']) {

$msgid - string
$entry['msgid'] - array

[pherrymason]

I see, for some reason internal catalog has the msgid inside an array of one item and therefore condition does not match.
I guess I can do a "hack" for this corner case... But it would be better if you could provide with a minimal catalog.po file that can reproduce this and see if we can fix it before reaching this point.