If we remove a capsule item, the fact we're hovering over it makes the popup appear - and yet it doesn't go away when we click the 'x' button of the capsule.
To reproduce:
- Go to Special:RecentChanges, choose a couple of filters to appear in the capsule
- Remove one filter from the capsule, by clicking its "x" button (note - the popup appears as you hover)
- The popup should go away when the capsule item vanishes