Block style not shown on admin pages

Hello.

I use the block-style feature (https://publishpress.com/knowledge-base/custom-css/#h-the-default-block-styles-in-publishpress-blocks) on a customer website.

Since I have updated the website to wordpress to 7.0 the block styles are not shown on admin pages.
I have tried to analyse the issue and it seems to me, that all css styles which are embedded directly in head tag, are not longer considered (are not visible in Gutenberg editor).

As a quick-fix, I put all my block-style-settings into my editor-style.css in the child theme directory (which seems to only load on admin-pages)