Welcome to our forum and thanks for contacting us with your question!
To prevent this space at the top you can set
title.floating to true and it will not push the button and input down. You can also specify where the title should be placed using
title.align as I showed in the prepared demo.
Live demo: https://jsfiddle.net/BlackLabel/rs5aq0zh/
Feel free to ask any further questions!
Best regards
Jakub