Adding app in Shared Channel fails, then suddenly works

[sebiJo]

Adding tab apps in Shared Channel is faulty.
Tested in Microsoft Edge, Client version 1415/24102001318. The native Teams app is also affected.

1. Create a new team
2. Create a shared channel below
3. Click plus button in the shared channel. Try to add an app like “Project Plan” (other apps also affected!)… won’t appear even though it support shared channels
4. Click plus button in the general channel, add app “Project Plan” to the general channel -> OK
5. Click plus button in the shared channel. Try to add app “Project Plan” again -> An error message appears
6. Log out of Teams account / relaunch Microsoft Teams / relaunch browser
7. Click plus button in the shared channel. Try to add app again -> Now it works

[microsoft-github-policy-service]

Hi sebiJo! Thank you for bringing this issue to our attention. We will investigate and if we require further information we will reach out in one business day. Please use this link to escalate if you don't get replies.

Best regards, Teams Platform

[Prasad-MSFT]

Hi @sebiJo, thanks for bringing this issue to our attention. We will check this at our end and will revert back shortly.

[Prasad-MSFT]

Update:
We are able to repro this issue and have raised a bug for the same. We will update you once we have any progress status from engineering team. Thanks!

[sebiJo]

Is there any update on this? I assume this bug really affects a huge number of users.