"Online in league" filter missing?

After the change to the trading system, with asychronous trade, I can no longer sort by "Online in league" on pathofexile.com/trade.

I can sort by each league by choosing "Standard" or "Keepers" etc. to get any item that's available in that specific league. But the problem is that I get any item that's listed in those leagues even if the player is currently playing in another league.

So if I want an item in standard and I sort by that then I'll get a hit for it even though the player is currently on a Keeper character.

This is fine if I want to do an instant buyout, but not if the item is listed the old way.

From the Bulk item exchange tab I still have the option to sort by "online in league", but not from the Search listed items tab.

The workaround I've been using is to copy the player's name, and do a /whois search ingame to see which league they're currently on. But that's really tedious.

So, am I missing something?

Is there a way to sort by online in league from the filters or something?