Ref: https://getbootstrap.com/docs/4.0/components/buttons/#checkbox-and-radio-buttons

As of today we need to add data-toggle="buttons" to get proper styling on check / radio buttons done with inputs + labels. While I totally see how it works perfectly with provided jQuery plugins, it is not very intuitive for people not using jQuery but rather using a framework like Angular or React.

Would you consider another method of styling toggle buttons, for example using a dedicated CSS class (eg. .toggle-buttons)?

I've opened similar issue in the past (#20359) but then closed it as a duplicate of #18874. #18874 in turn got closed as a duplicate of number of other issues without addressing the problem. Hence I'm opening a new issue to start with a "clean slate".