If an ActionList component is used inside a form element, selecting any action from the list triggers the form's onSubmit handler:

Source for the above GIF is here.
Clicking an item should not trigger an ancestor form's onSubmit handler.
Clicking an item triggers an ancestor form's onSubmit handler.
Demo code here.
Problem outline:
ActionList in a form element with an onSubmit handler.ActionList.Thanks for the issue @andrewpye. I鈥檒l open an internal issue for this.
We鈥檝e fixed this internally and it will be available in the next release
This is fixed in 2.6.0 馃憤
Most helpful comment
We鈥檝e fixed this internally and it will be available in the next release