Spacer Block

Hi,

I am using reusable blocks to insert spaces into my blog posts. I have one reusable spacer block that is 13px and one that is 8px. When I am editing posts I can see that they are inserted into the blog post and creating the required space. However when they are published no space appears and the text appears bunched.

Can anyone tell me if I am doing anything wrong. My theme is Astra. WP is up to date.

Thanks!

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