load[]= is being injected in the middle of handles for the load-scripts.php query string.

[roblesterjr]

We found this issue while troubleshooting why the admin panel did not work while being passed through the Fastly service. For some reason, the issue doesn't cause any issues when used normally, but when passed through fastly, it causes the scripts not to be brought in.

This code:

$concat = str_split( $concat, 128 );
		$concat = 'load%5B%5D=' . implode( '&load%5B%5D=', $concat );

Found at line 1146 in script-loader.php looks to be unnecessary. When I comment it out, and just prepend load[]= to the $concat value, the admin scripts load fine without the extra injection.

Here is an example of what i'm finding in the query string:

jquery-ui-widget,jq&load%5B%5D=uery-ui-mouse,jquery-ui-sortable

We'd love it if you would address this. Thank you.

[SergeyBiryukov]

Hi @roblesterjr, welcome to Trac! Thanks for the report.

This was previously discussed in #26886, but could not be reliably reproduced, so that ticket is now closed, but can be reopened if there's an indication of a bug in core. Could you please leave a comment on that ticket so we could keep the discussion in one place? Thank you!