App doesn't work/no response when tested with regular browser based LIVE test and Preview

[tatiang]

That might be related to this issue:

Buttons not working when Live Testing in browser

Thanks for the detail! I had clicked Preview to test the app and it was working as expected, so I appreciate the clarity. I added other Buttons to try changing the background color of the Screen, and they also don’t function in the Live Test pop-up window. Does any set of blocks work as expected for you in this Live Test pop-up window?