RTE fields (and grid fields) in the rollback window

Questions
1

If I go the the previous versions, click on rollback, and view the differences with an older version, some field return constantly the same data.
In this screenshot, it says (if I get it right) that the previous version had a Umbraco.TinyMCE in the layout property in the json, and now the layout is null.

The image shows a close-up of code snippets with the word "layout" highlighted, where one snippet contains an array of "Umbraco.TinyMCE" and another is set to null, alongside the title "Overzicht intro." (Captioned by AI)
The image shows a close-up of code snippets with the word "layout" highlighted, where one snippet contains an array of "Umbraco.TinyMCE" and another is set to null, alongside the title "Overzicht intro." (Captioned by AI)305×188 5.1 KB

But EVERY version I look at shows this exact same change.
If version Y says it’s changed to layout: null, version Y+1 tell’s me “it was Umbraco.TinyMCE, but now it’s null”.

I also get a lot of things in red with grid fields. And the ‘current’ value in green shows exactly the same data.

Am I looking at it wrong? Or does this rollback feature just not show data correctly?
Checked in different U13 and U10 sites.