Post editor errors out when Yoast is active on WP 6.8

[ajaykj]

Context and steps to reproduce

Opening the post editor displays an error. The content of the copy-error is

TypeError: Cannot read properties of null (reading 'toString')
    at pL (https://c0.wp.com/c/6.8/wp-includes/js/dist/components.min.js:33:143126)
    at n (https://c0.wp.com/c/6.8/wp-includes/js/dist/components.min.js:33:146597)
    at t.get (https://c0.wp.com/c/6.8/wp-includes/js/dist/components.min.js:33:146758)
    at t.render (https://c0.wp.com/c/6.8/wp-includes/js/dist/components.min.js:33:155778)
    at br (https://c0.wp.com/c/6.8/wp-includes/js/dist/vendor/react-dom.min.js:10:59368)
    at yr (https://c0.wp.com/c/6.8/wp-includes/js/dist/vendor/react-dom.min.js:10:59167)
    at Qs (https://c0.wp.com/c/6.8/wp-includes/js/dist/vendor/react-dom.min.js:10:121084)
    at wl (https://c0.wp.com/c/6.8/wp-includes/js/dist/vendor/react-dom.min.js:10:88341)
    at bl (https://c0.wp.com/c/6.8/wp-includes/js/dist/vendor/react-dom.min.js:10:88269)
    at yl (https://c0.wp.com/c/6.8/wp-includes/js/dist/vendor/react-dom.min.js:10:88132)

The site is on WP 6.8. The latest version of Yoast is active, and no other plugins (except Jetpack and Akismet) are active. There are no fatal errors or other issues. The site has no clear indications about the error unless the post editor is opened.

Site owner impact

Fewer than 20% of the total website/platform users

Severity

Major

What other impact(s) does this issue have?

No response

If a workaround is available, please outline it here.

Rolling back WP Core to 6.7.2 fixes the issue.

Platform

Atomic

Ref: p1744820229703649-slack-C03TY6J1A and p9F6qB-hB8-p2

[RafaelFunchal]

Just noting that we had two similar issues in the past:

• Bug: Post/Page Editor crashes when triggering Command Palette when a block is selected #81005
• The Editor shows TypeError: Cannot read properties of null (reading 'toString') when Gutenberg is active #97528

[mauropereiira]

We found another case discussed on this Slack Thread (p1744904859198669-slack-C03TY6J1A) related to the Theme theretailer.
We had to roll back WP to 6.7.2 to work.