All blocks disappear as "Not supported" in latest version

[rodica-andronache]

Description

I wasn't able to replicate this so far, but multiple users report something similar, so I think it's worth investigating:

• https://wordpress.org/support/topic/all-blocks/
• https://secure.helpscout.net/conversation/2685855636/430944?viewId=212385
• https://wordpress.org/support/topic/options-blocks-no-longer-appearing-in-wp-admin-setting-page-loads-empty/
• https://wordpress.org/support/topic/qtags-is-not-defined-2/

Seams to be a regression.

Step-by-step reproduction instructions

What users are experiencing:

• The error: Your site doesn't include support for the "themeisle-blocks/advanced-columns" block. You can leave this block intact, convert its content to a Custom HTML block, or remove it entirely.
• In the WordPress dashboard, clicking on the “Otter blocks” link in the menu only a gray page without writing appears, and the same happens when clicking the “Settings”, “Blocks”, and “About us” links instead, even if for a second you see the regular page and the “redirecting…” indication and then everything disappears immediately. The “Submission Pro” and “Get otter Pro” links work regularly.

Screenshots, screen recording, code snippet or Help Scout ticket

No response

Environment info

No response

Is the issue you are reporting a regression

Yes, this is a regression.

[rodica-andronache]

+1 https://secure.helpscout.net/conversation/2686101851/430961/

[AndreeaCristinaRadacina]

+1 https://wordpress.org/support/topic/all-blocks/

[Soare-Robert-Daniel]

+1 https://secure.helpscout.net/conversation/2686101851/430961/

Our main JS scripts are not loaded for this user on the page. Thus, neither the blocks nor the Otter dashboard are working.

[Update] I think there might be some problems created by other plugins; I see that the pages load a lot of data.

[selul]

@Soare-Robert-Daniel, the problem is consistent on WP 6.5.5; I tried on an empty instance, and the Otter page is not loading.