Columns overlapping in Section Block

[Mara42]

Description

When using the section block, if you add the heading template, the columns start overlapping in the case of a page, or columns disappear in the case of a post. Is there a way to prevent columns from overlapping or disappearing when using the section block with the heading template on non-FSE themes? I've tested with multiple themes, but this behaviour is not visible with FSE themes.

Step-by-step reproduction instructions

1. With Otter blocks installed add a section on a post/page
2. Add something in the first section, it doesn't matter if it's an image, paragraph, etc.
3. Search for Heading and add the simple Heading option (the one that has only text)

Screenshots, screen recording, code snippet or Help Scout ticket

Screen.Recording.2024-09-23.at.17.55.51.mov

Environment info

No response

Is the issue you are reporting a regression

No