We noticed that AUI 9.x checkboxes broke in one of our p2 plugins when we tested it on Confluence 7.12beta1.
We haven’t had time yet to study root cause but it feels like a problem with focus management. Maybe a problem of the containing div taking focus now while it used to be that the checkbox took focus.
I am keeping a note about this thread, will post if I discover more.
I’d also like to see if this could be changed/fixed in AUI 9 without developers having to do anything.
In addition to that, if there is anything Atlassian can add to the story it should probably be added to the migration docs and other places that people are using during this time of upgrade to AUI 9:
https://aui.atlassian.com/aui/9.0/docs/upgrades/aui-9.html
Thanks.