Searching for coin that is entered as a coin of "unknown type"

Some coins are present in the catalog as "common coins", others as "Circulating commemorative coins" or "patterns" etc. Some are entered as "unknown", e.g. Saudi Arabian 1 qirsh of 1378 (this property is visible in the page "Modify or add information about this coin").
When I restrict the criteria to this particular country and year, and search for all types of coins, I see this coin in the result list. When I'm searching for all types except "common coins", this coin is not visible. When I search for "common coins" only, it is not visible again. But this is inconsistent, because it either is a common coin or not, even if we do not know what it is.
I do not know what should be modified first: the search function itself or coins that are registered as coins of unknown type.

All such issued were fixed already. Team went through each country.
For Saudi Arabia, referee is absent nowadays, and type requests are pending. Once he validates these, it should be fine.
It might be the case for other countries too that requests are still pending. These shall be resolved very soon.