Responding with `type: "message"` to `task/fetch`activity result in empty task module

[shubham-betterworks]

Response for /invoke API with activity type "task/fetch"

https://docs.microsoft.com/en-us/microsoftteams/platform/task-modules-and-cards/task-modules/task-modules-bots?tabs=nodejs

[ghost]

Hi shubham-betterworks! 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

[ChetanSharma-msft]

Hello @shubham-betterworks - Hope you are preparing and returning proper Task Module response like below:

Submit handler response:

Please refer below sample code: https://github.com/microsoft/BotBuilder-Samples/blob/main/samples/javascript_nodejs/54.teams-task-module/bots/teamsTaskModuleBot.js

[shubham-betterworks]

Hi @ChetanSharma-msft, yes I'm returning a proper TaskModule response

To reproduce the issue you can just change the return statement in handleTeamsTaskModuleFetch to return TaskModuleResponseFactory.toTaskModuleResponse('invoke message'); and try invoking the TaskModule from the bot. It will result in an empty Task Module.

[ChetanSharma-msft]

Hello @shubham-betterworks - Task modules permit you to create modal pop-up experiences in your Teams application. In the pop-up, you can:

1. Run your own custom HTML or JavaScript code.
2. Show an