When I select text in modal, continue to move mouse outside the modal, then do mouse up and the modal will close.

I expecte that modal will not close after mouse up outside modal.

There was the same issue with react-bootstrap react-bootstrap/react-bootstrap#3373 but it already fixed.

I have this bug in Chrome, Edge, Opera.

It works fine in Firefox and IE11 .

I use latest bootstrap-vue version.

Also it works good (modal doesn't close) on official Bootstrap 4 Docs page https://getbootstrap.com/docs/4.1/components/modal/