Button in List group not getting hover state on focus

[timptner]

In my card I added a list group with <a> elements and one <button>. With normal background the items and also the button will get into hover state on focus but with bg-dark the button will no longer support hover state.

[timptner]

Live demo:
codepen.io

Browsers tested:

Opera ❌

Chrome ❌

Firefox ❌

Safari ❌

Bootstrap Version:
4.0.0-beta2

[tmorehouse]

There also appears to be a related issue when the button has the active class as well. it lacks any hover/focus styling.