Hey folks - quick update here.
This might be tied to some broader Shopify Mobile modal/footer behaviour we were tracking with the floating bottom toolbar. A fix for modal actions in the app iframe has now been deployed through App Bridge CDN, so no app-side update should be needed for the modal button/footer issue:
If you’re still seeing the issue, could you fully close and reopen the Shopify Mobile app, then retest the same modal? If you’re still seeing the actions missing after that, could you share an updated screenshot or short recording, along with the device model/OS, Shopify Mobile app version, and whether the modal is using s-modal, App Bridge modal, or Polaris React Modal?
For any custom fixed-bottom UI outside of the modal itself, the safest path is to position it using --shopify-safe-area-inset-bottom so it sits above the Shopify Mobile toolbar when that toolbar is present.
Let me know if you’re still seeing this after retesting and I can dig further on our end.