Bug related to item filter - some items can't be hidden by pressing "Toggle highlighting" button

In 1st screenshot, this is what my item filter usually shows. After pressing "Toggle Highlighting" button all shown items should be hidden. But, sometimes, some items are keep showing even after I press "Toggle Highlighting". This situation is displayed in 2nd screenshot.

If i pick up such items (displayed on 2nd screenshot) and then drop them on the ground - they would be correctly hidden.

Items that keep showing after pressing "Toggle Highlighting" button are not specific classes nor base types - they could be different types of items. One tend that i noticed is - those items which keep showing are the ones dropped by special drop conditions. For example - reward for defeating shaper's stronghold (sextants, shaper rare items, random unique items), or additional vaal items dropped by unique map bosses in map affected by sextant mod "Unique Bosses of Corrupted Maps drop an additional Vaal Item" (this was the case in my screenshots). Items dropped by generic drop rules are never affected by this bug.

This bug isn't something new - it exists at least for last few years.

PS: please don't underestimate importance of this bug - sometimes hiding what item filter shows is extremely important for being able to fight because lots of shown items are overlapping the screen and we can't see what is happening in the fight nor can't target enemies properly.