It only works when the page with the modal is refreshed, if the merchants goes to a different page (ajax/xhr based routing) and tries again, the issue is back and the buttons won’t appear.
@Philo are you able to provide more details on the framework you’re using, or how you’re populating the modal? I’m not able to reproduce the issue. Any information you can provide that will help us narrow down would be helpful.
Thanks for that, we were in process of promoting the 1.1 into the stable channels. I’m going to take a look at reproducing the issue. This didn’t come up during the release candidate soak period we had.
Interestingly (and possibly related), anybody who is getting the new Shopify Admin UI and seeing modals inside of apps still running Polaris React are getting modals with really large padding in the footer/button section: