Repro steps

1. Navigate to https://microsoft.github.io/BotFramework-WebChat/01.a.getting-started-full-bundle/
2. Wait until it is connected
3. Type "carousel" 5 times

Expected: no padding below transcript

Actual:

Please add a test to verify the fix is in-place.