When a custom element renders a <dialog> element as part of its shadow root, itβs impossible to use the tab key to focus on slotted elements such as inputs and buttons. This issue was encountered in Safari Technology Preview Release 140. CodePen replication: https://codepen.io/zolk/pen/oNoEMmN
<rdar://problem/89382466>
Thanks for reporting! It looks like bug 230845 has fixed this, will look into writing a test when I have time. *** This bug has been marked as a duplicate of bug 230845 ***