Submit a form with <select required> where the current <option> value is set to empty via js. It's not validated. https://jsfiddle.net/njw9pvo5/ <form> <select required> <option id=myoption>test</option> </select> <button>submit</button> </form> <script> myoption.value = '' </script>
<rdar://problem/47189998>
Safari Technology Preview 167 does not show any tooltip to reflect that the selection is manadatory while it does for Chrome Canary 114 and Firefox Nightly 113.