This bug is present in the lastest stable version (4.0) Steps to reproduce - Go to https://getbootstrap.com/docs/4.0/components/pagination/ - Using chrome devtools force `.page-link` to be in `hover` state - Change border color to e..g red to see the bug Looks like z-index for `:hover` was accidentally removed in this commit https://github.com/twbs/bootstrap/commit/797149ed267c59189fcf043c1a95484cfb9c7469 