If you put a monolith inside the bag, it "disappears" and the visual effect activates and can't be turned off because the monolith can't be seen.

Even if you turn the buffs stations off, the visual effect remains. It's kind of annoying.

EDIT: I finally found what was causing the permanent visual effect. My wife plays with my character on her world. She, by mistake, put the monolith as a vanity item, while tying to put it inside the Big Bag, thus my confusion.

As a matter of fact, if you place monoliths inside the big bag, they won't turn on, nor disappear.

Moral of the story, never again, my wife will use my character, lol.