As a not so great alternative I added a class to each field of a particular group and used jquery to wrap these elements within a div.
$('.group1').wrapAll('<div class="field_group field_group_1">');
I really really wish this was integrated into the core. I need to be able to keep acf up to date and can’t seem to figure out how to accomplish this without implementing your updates…
Never mind, this code actually works.