[Bug]: pullquote block content is not validating

[griffbrad]

Quick summary

In 5566112-zen, a user reported that their pullquote blocks render correctly on the fronted of their site, but in the editor itself, the text included in the pullquote is missing. On further examination, they're getting block invalidation errors for this content.

Steps to reproduce

1. Use content with a DOM structure similar to that found in the above ticket for a pullquote block and attempt to load the resulting post in the editor.
2. Note that the text embedded in the paragraphs within the pullquote is not rendered.

What you expected to happen

All the content to be rendered, similarly to the frontend.

What actually happened

Text content is missing.

Browser

No response

Context

No response

Platform (Simple, Atomic, or both?)

No response

Other notes

No response

Reproducibility

Consistent

Severity

One

Available workarounds?

Yes, difficult to implement

Workaround details

Workaround would be going through all the existing content and fixing the pullquote blocks, which would be quite arduous given the amount of content the user has in place already.

[github-actions]

Support References

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• 5566112-zen

[griffbrad]

Opened an issue upstream as well: WordPress/gutenberg#45562