Admin CSS does NOT load on some pages

[cerrone]

Edge, MacOS ventura, latest releases

Steps to reproduce

1. open the admin dashboard
2. click through to the pages below

Current:
These admin pages do not show propoerly as the CSS does not load: POST, PAGES, APPEARANCE, PLUGINS, USERS, TOOLS, SETTINGS

Expected
all pages shall render properly

[cerrone]

FYI
I received an email 6 hours ago that WP on my site got updated to 6.3.

Replying to cerrone:

Edge, MacOS ventura, latest releases

Steps to reproduce

1. open the admin dashboard
2. click through to the pages below

Current:
These admin pages do not show propoerly as the CSS does not load: POST, PAGES, APPEARANCE, PLUGINS, USERS, TOOLS, SETTINGS

Expected
all pages shall render properly

[cerrone]

Have deactivated each plugin, to no avail. same issue.

[NekoJonez]

Looks quite similar to the issue of WP 6.3 Beta 1 ...

[NekoJonez]

Replying to cerrone:

FYI
I received an email 6 hours ago that WP on my site got updated to 6.3.

Replying to cerrone:

Edge, MacOS ventura, latest releases

Steps to reproduce

1. open the admin dashboard
2. click through to the pages below

Current:
These admin pages do not show propoerly as the CSS does not load: POST, PAGES, APPEARANCE, PLUGINS, USERS, TOOLS, SETTINGS

Expected
all pages shall render properly

Could you look at your browser console log to see if any errors are shown? This might help us debug the issue.

[cerrone]

No logs in the console.

Besides, I don't have issues in Edge's incognito mode.

Update: one more thing to add. I am running also these plugins which don't seem to have been tested on 6.3: Wpdatatables, Restrict Content and Duplicate Page

[NekoJonez]

It is not WPDataTables. I run that on 5 websites and that's working fine on WP6.3

What if you manually reinstall WP6.3 and disable all plugins (disable is different from removing them. You can disable them by renaming their folder name in WP-content -> Plugins)

Also, if you don't have the issue in another browser... Clean your cache maybe?

[cerrone]

I have cleaned the cache 3x. Reinstalled Edge.

I had not said that I don't have the issue in other browsers, however, I have just tried in Safari 16.4 (18615.1.26.11.22), works as expected, and Opera latest release, also works as expected.

Looks like MS gotta fix something.

[tolvajsanyi]

Hello guys,

Temporary fix on Stackoverflow:
define('CONCATENATE_SCRIPTS', false);

It works to me. Just insert into wp-config.php

​https://stackoverflow.com/questions/18769141/wordpress-admin-not-loading-css-js/20210232#20210232

[cerrone]

Thank you. That worked.

[NekoJonez]

Since this issue doesnt appear on all websites and it looks like the fix above fixes the issue... I think its save to close this ticket. Unless its appearing for everybody else or others, feel free to re-open.