Gallery block: Image size select doesn't load if no image ids

[glendaviesnz]

Description

If a gallery consists only of external images, which have no WordPress id, then the Image size select in the settings panel gets stuck on loading.

Step-by-step reproduction instructions

• Add a v2 Gallery block (use Gutenberg > 11.9) with a couple of images
• Replace the images using the 'Replace' button in the block toolbar and enter an external image url
• Notice that the Image size selector gets stuck on loading

Screenshots, screen recording, code snippet

Environment info

Gutenberg > 11.9

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[andrewserong]

I believe I have a fix for this in #36806 (for one of the cases, which was after migrating the v1 gallery using the Update button, there's also a fix in #36804 which should help with testing).

[dynamek]

I am getting this problem still with latest all updates done. Adding new gallery block (of over 100 images) and the 'Image size' just keeps rotating the 'Loading options…'.

[glendaviesnz]

I am getting this problem still with latest all updates done. Adding new gallery block (of over 100 images) and the 'Image size' just keeps rotating the 'Loading options…'.

@dynamek can you please clarify if "with latest all updates done" is just WordPress 6.0, or do you also have the latest Gutenberg plugin installed?

[dynamek]

With Wordpress 6.0, and no additional gallery/gutenberg plugin installed.

[glendaviesnz]

With Wordpress 6.0, and no additional gallery/gutenberg plugin installed.

Thanks for confirming. I wasn't able to replicate the issue on a fresh WP 6.0 install with a gallery of several hundred images. Do you see any errors in the browser javascript console, or are there any network requests pending in the developer tools network tab when you see the stuck loading options message?

[dynamek]

Looks to be this error

Failed to load resource: the server responded with a status of 502 ()
/wp-json/wp/v2/media…=100&_locale=user:1

[glendaviesnz]

Failed to load resource: the server responded with a status of 502 ()
/wp-json/wp/v2/media…=100&_locale=user:1

Do you have access to your server error logs? The error log may provide some more details as to why the error is being thrown.

[dynamek]

I sent you the error logs yesterday, have you seen them?