Figure out why the core autocomplete onkeyup behavior clicks the checkout continue button

up

I don't really see this as an issue with our code, though I could be wrong. Our code solely looks for a click on the button, and for some reason pressing enter in the autocomplete dropdown is triggering this click event. The only relevant code in misc/autocomplete.js appears to be Drupal.jsAC.prototype.onkeyup, but I don't know why it is triggering a click event on the continue button.

Confirming the issue, just not sure the fix should be in Commerce vs. Drupal itself.

ok rszarama,
in my case I think the problem is with Commerce Registration
I've another issue here https://www.drupal.org/node/2402949
the entity registration form has an autocomplete field, it's not working in the checkout pane.
I can "solve" the problem, in may way, comping the script in the head of the page that work and pasting it in
a markup filed in the form.

I was able to reproduce it by adding a product reference field with an autocomplete widget to the billing customer profile type. So it's not just Commerce Registration but definitely something in the autocomplete.js behavior clicking that continue button.

uhm,
so it's a Drupal core issue?
I'm not a coder. I just want to create an issue in the right place, just to find someone who can solve it.
thanks a lot and sorry for my english

I'm saying it may be a core issue, but I'm happy for this to remain open here until someone can find out for sure.

isn't this a duplicate of #1931180: Checkout.js disables continue conflicts with autocomplete?

and part of #2598918: Prevent checkout form submission when "Enter" is pressed on checkout text inputs?