Hey there,
Welcome to Kadence Support!
The spacing added to Advanced Text Blocks are default to WordPress Gutenberg. We don’t add or modify this default functionality. To remove this spacing, you should set the Bottom Margin of the Advanced Text Block to None.
You can use the Block Defaults settings to automatically remove the Margin from future Advanced Text Blocks. This will allow you to set the Advanced Text Block Bottom Margin to none. Then, you can save that configuration as your Block Default. So anytime that you add a new Advanced Text Block, the bottom margin will automatically be set to none. Here is a video on how you can set this up for reference: https://share.zight.com/jku0ELgQ
Additionally, we do have a Feature Request on this topic. I suggest voting on it to help it gain popularity, as we often implement popular Feature Requests into our products. You can vote on this request here: https://feedback.kadencewp.com/p/setting-for-heading-tags-039-bottom-spacing
I hope this was helpful to you. Please let us know how we can further help.
