[WP 6.6-RC1] Featured Image Media Modal only shows the latest uploaded image

[jartes]

Description

When setting a featured image using the post/page settings, only the last uploaded image is displayed in the media library modal:

This happens on WordPress 6.6-RC1 and with and without the Gutenberg plugin active.

The following JavaScript error is being displayed on the browser console:

media-models.min.js?ver=6.6-RC1:2 
Uncaught TypeError: t.get is not a function
    at n.comparator (media-models.min.js?ver=6.6-RC1:2:5566)
    at e.comparator (media-views.min.js?ver=6.6-RC1:2:7240)
    at Array.sort (<anonymous>)
    at n.sort (backbone.min.js?ver=1.5.0:2:11690)
    at n.set (backbone.min.js?ver=1.5.0:2:10286)
    at n.add (backbone.min.js?ver=1.5.0:2:8973)
    at n.validate (media-models.min.js?ver=6.6-RC1:2:2960)
    at n._validateHandler (media-models.min.js?ver=6.6-RC1:2:3953)
    at p (backbone.min.js?ver=1.5.0:2:3818)
    at f (backbone.min.js?ver=1.5.0:2:3497)

Props to @mrfoxtalbot for finding out about this issue.

Step-by-step reproduction instructions

1. Use a site with WordPress 6.6-RC1, with or without the Gutenberg plugin active.
2. Make sure you have a few images on the site media library
3. Create a new post/page.
4. Click on the Set features image button.
5. Check that only the last uploaded image is being displayed.

Screenshots, screen recording, code snippet

Screen recording with the steps to reproduce this error:

Screen.Capture.on.2024-07-02.at.15-37-54.mp4

Environment info

WordPress Version: 6.6-RC1
Theme: Twenty Twenty-FourVersion: 1.1

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

[priethor]

I can reproduce this issue with the environment above, but this issue does NOT reproduce with WordPress 6.5.5 and the current Gutenberg plugin trunk (18.7-rc.1); the error comes directly from WP 6.6. I recommend moving it to a Trac ticket. cc @ironprogrammer

[t-hamano]

I was not able to reproduce this issue in WP6.6 RC1 🤔

40653052b781cab1d0535d90bf33c1d6.mp4

[youknowriad]

I think @Mamaduka worked on something related to the media modal for featured image recently right? Maybe you'd know more about this issue?

[Mamaduka]

I'm having trouble reproducing the issue, but as @priethor mentioned, it's probably coming from the Media Library code maintained on Trac.

Enabling the SCRIPT_DEBUG should load unminifed JS files and give us a better error report.

Edit: I am happy to help debug this further once we have a consistent way of reproducing the bug.

[priethor]

The issue can also be reproduced with Playground.

@jartes and I originally reproduced it with the Beta Tester plugin; are you using a bundled 6.6-rc1 or running the WP 6.6 branch, @Mamaduka @t-hamano?

[Mamaduka]

@priethor, I've tried the following combos locally.

• WP 6.5 + Gutenberg trunk ✅
• WP beta tester plugin upgrade to 6.6 RC, with and without Gutenberg trunk ✅

[t-hamano]

I believe I was using WordPress 6.6 RC1 when I tested this issue, but I tested it again and I still can’t reproduce the problem.

• WP 6.5 + Gutenberg trunk ✅
• WP beta tester plugin upgrade to 6.6 RC2, with and without Gutenberg trunk ✅