"tier:" does not highlight maps in merchant and regular tabs

The popup help for the highlight box in stash pages says "Search for map tier by typing tier:X". This used to work.

Now, if I type "tier:6" (no quotes) it does highlight the div card "Rain Tempter" which produces a tier 6 map, but does not highlight tier 6 maps. This happens in merchant tabs and in regular stash tabs.

If I type "tier" (no quotes) it will highlight all maps and all div cards that return maps of a specific tier.

If I type "tier:" (again, no quotes) it will highlight all div cards that return maps of a specific tier, but stops highlighting maps.