Occasional Contributor

Does Mobile Clients on Teams fully support actionable messages? I have an issue where my card's HTTPPost actions  work fine on every client except Apple/Android. OpenURI works on everything.

I have asked this question on Stackoverflow and Twitter, but I have not got an answer on if this is a bug or a misconfiguration on my end. Screen recordings of the error in my Stack Overflow post. https://stackoverflow.com/questions/54451980/why-does-teams-mobile-app-httppost-action-not-work-on-c...