Thanks for writing in!
I tested Classic Slider and toggled No Container options and I don't see any issues. In Dev tools also I don't see any error message, I don't think it's a bug in this case. Here's a screencast.
Please try out following solutions and see how it goes:
- Ensure everything is up to date according to our version compatibility list here. Please follow the best practices when updating your theme and plugins. Click here for more information.
- Test for a plugin conflict. You can do this by deactivating all third-party plugins, and see if the problem remains. If it's fixed, you'll know a plugin caused the problem, and you can narrow down which one by reactivating them one at a time.
If you still have problems kindly get back to us with the result of the steps above and URL/User/Pass of your WordPress dashboard using the Secure Note functionality of the post to follow up the case.