Signup cards are broken in new editor

[timscha]

Issue Summary

I am using the latest Ghost version and have activated the beta of the new editor.
In my editor view I added the new signup card which looks correctly like that:

But in the preview and after published the post it looks like that (and nope that’s not a screenshot from a small display):

Steps to Reproduce

1. Wrote article
2. Placed the signup card
3. Added a photo and slightly changed the text
4. Published it
5. Checked it with Safari and Chrome

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Setup information

Ghost Version
5.55.1

Node.js Version
v18.17.0

How did you install Ghost?
Followed the offical tutorial

Provide details of your host & operating system
Debian 12, MySQL 8, nginx as webserver

Database type
MySQL 8

Browser & OS version
Chrome 115 and latest Safari

[Cathy_Sarisky]

Which theme is this? Can you link the live site?

[RyanF]

The new card requires updates to a theme’s styles. All official themes have been updated, but you’ll need to make sure you’re using the latest version on your site. For third-party themes, you’ll need to get the latest update from your theme developer.

Fore more info, see here: Ghost Theme Features: The Editor - Documentation

[timscha]

Thanks @RyanF! I will reach out to the developer of my theme. Sorry for making a false alarm.