The full discussion can be found here https://github.com/rachelandrew/gridbugs/issues/57 and a demo of the problem here https://codepen.io/akc42/pen/gObLLod Basically, when using repeat auto, safari puts all the buttons at the end of the grid, overlaying one another rather than how other browsers work which is to lay them out in a grid
<rdar://problem/60063133>
I am not able to reproduce this bug in Safari 16.3, it renders the buttons similar to Chrome Canary 112 and Firefox Nightly 112. I am marking this as "RESOLVED CONFIGURATION CHANGED". Please reopen if it is still reproducible for anyone else. Thanks!