Error 400 when using open bot with AppId+Password

Version

4.3.3 on MacOS

Describe the bug

I created an echo bot using the yeoman generator following this doc, but I was unable to test the locally hosted bot in the emulator using the open bot with URL (+ AppID and password) feature. This bug only exists when we add an AppId and Password to the local bot. I got that AppId and Password from a newly created ABS Web App Bot. The workaround to this problem was to create a .bot file with the local endpoint, AppId and Password.

To Reproduce

Steps to reproduce the behavior:

1. Follow this doc to create a bot locally.
2. Follow this doc to create Web App bot to gather an appid and password
3. Deployment is optional
4. Add AppId and Password to .env of my yeoman generated bot that is hosted locally.
5. Open the emulator and click on Open Bot
6. Enter my localhost endpoint, AppId and Password
7. Say hi or anything to the bot
8. ends with a 400 directline.postActivity issue

Expected behavior

This should just work out of the box as it does with a local bot without an AppId and Password.

Additional context

The work around to this problem was to create a new bot configuration file, add the endpoint, AppId and password. Save the file and then talk to the bot. This worked fine, but took us a while to figure this out.

[bug]

[cwhitten]

@stevengum was able to reproduce. we’ll be taking a work item to continue the thread. cc @justinwilaby

[cwhitten]

hi @ovishesh & @brandonh-msft. we will take a look at this. thanks