If the suggestion status is not in SUGGEST_STATUS authorized values, the UI will show a tab with the untranslatable, hard-coded, text "Unknown": suggestion/suggestion.pl: return GetAuthorisedValueByCode('SUGGEST_STATUS', $criteriumvalue ) || "Unknown";
I think this is a duplicate to a bug I filed and tried to solve a while ago - still have to find time to get back to it or at least split it up for a partial fix. *** This bug has been marked as a duplicate of bug 10519 ***