prepublish panel not appearing when we select custom post status

[yogeshdalavi]

I'm facing a problem with the pre-publish panel's behavior when a custom post status is selected in WordPress 6.6.

I have tested the pre-publish panel behavior on two different WordPress versions using the Playground(​https://wordpress.org/playground/). In WP 6.4, when creating a new post and selecting a custom post status (e.g., "Ready for Publish"), the pre-publish panel appears as expected. However, in WP 6.6, following the same steps, the custom status is set in the backend, but WordPress core treats it as a draft, and the post is not published. At this point, I have to click the "Publish" button again for the pre-publish panel to appear. This change has altered the previous post-publish behavior.

Please refer to the screenshots for more details:

WordPress 6.4: ​https://we.tl/t-ho4nMzZg7S
WordPress 6.6: ​https://we.tl/t-pZ0yXxtUaB

In summary, the issue is:
Actual Behavior in WP 6.6: The pre-publish panel does not appear on the initial "Publish" button click after selecting a custom post status.

Expected Behavior: The pre-publish panel should appear on the initial "Publish" button click, even after selecting a custom post status.

[yogeshdalavi]

Pre-publish Modal Behavior in WP 6.4 and WP 6.6 with Custom Post Status

[afercia]

@yogeshdalavi thanks for your report.
Looking into this during today's Yoast contributor day.
Given this issue relates to the block editor, I moved it to the Gutenberg GitHub repository at ​https://github.com/WordPress/gutenberg/issues/66199
Please do feel free to join the conversation on GitHub, thanks,