Unable to add any apps to Teams

[mike-brown]

The ability to add apps to the Teams channel is completely missing.

[#2]

Hello
we have an identical issue.
On Teams preview version, a teams application disappears (still available on Teams running version) and the "Applications" button disappears in the left menu.

[#3]

If you're using the preview version of Teams, there are several limitations. You can get a better idea of what's available here: https://adoption.microsoft.com/en-us/new-microsoft-teams/