Twenty Ten (up to Twenty Sixteen): Multi-level list blocks don't cascade in editor

[druesome]

Quick summary

Multi-level list blocks created on the following themes appear on the same level in the editor. Moreover, there is no differentiation of bullets between each level, making it more difficult to work with this type of list.

• Twenty Ten
• Twenty Eleven
• Twenty Twelve
• Twenty Thirteen
• Twenty Fourteen
• Twenty Fifteen
• Twenty Sixteen

Related: #6612

Steps to reproduce

1. Activate any of the above themes
2. Create a new page or post
3. Add a list block with nested list items
4. Check the published page. You will notice that this issue only happens in the editor.

What you expected to happen

I expected the editor to show that cascading/nesting style that is present on the published page.

What actually happened

The editor shows a multi-level list as they were a single-level list.

Browser

Google Chrome/Chromium, Mozilla Firefox

Context

5536111-zen

Platform (Simple, Atomic, or both?)

Simple, Atomic

Other notes

No response

Reproducibility

Consistent

Severity

Some (< 50%)

Available workarounds?

No but the platform is still usable

Workaround details

No response

[github-actions[bot]]

Support References

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• [ ] 5536111-zen

[kavyagokul]

📌 SCRUBBING : RESULT

• Tested on Simple: Replicated
• Tested on AT: Replicated
• Tested on Self-hosted: Replicated
• Replicable on Core? Yes

📌 ACTIONS

• Closed as duplicate of https://github.com/Automattic/themes/issues/6604

📌 Message to Author @druesome Thanks for the additional details and testing on other themes. I'm closing this and adding details from here on the existing report