Aggregation is not working correctly

Can you test on the 10.1.x dev release please? There have been a few very recent commits to the asset library system to address some bugs with the asset library changes introduced in 10.1.0.

@cilefen, I tested on 10.1.x dev and the problem remains

Are you running your webserver and drush as the same user? What are the owner, group and permissions on your files directory? Have you configured file_assets_path in settings.php? (You do not need to, but if it is set to an invalid location then perhaps this can happen)

@longwave,

Are you running your webserver and drush as the same user?

Yes

What are the owner, group and permissions on your files directory?

korotkov:korotkov (like all files on my local server) and 775 permissions

Have you configured file_assets_path in settings.php?

No, but assets:// the default is sites/default/files/public/

But css and js cleans with the same settings if I do it through Drush 11, or through Drush 12 but on Drupal 10.0

Can you try applying this patch and see if the directory gets deleted. I'm wondering if it's something to do with drush and the new assets:// stream wrapper.

Re-reading this sounds like a drush 12 issue.

I've commented on https://github.com/drush-ops/drush/issues/5728 which is unfortunately closed. I'm postponing this on more investigations on the drush side.

Well, it turns out it's something else. My Drush 12 ignores my settings.php and uses default values
And I remembered that I had a similar problem earlier when I was just updating sites on Drush 12 when I run drush cr I got error:
Missing $settings['hash_salt'] in settings.php.

And now, I tried getting the path of public:// and assets:// during debug and I got /sites/default/files` through Drush 12 and /sites/default/files/public through Drush 11 or Admin Toolbar.

My settings are arranged like this: sites/settings.php contains my main settings, which are used both on prod and on dev. In sites/default/settings.php I have individual settings depending on the environment. There via require_once DRUPAL_ROOT . '/sites/settings.php'; I connect the main settings to the individual ones. And Drush 12 sees only those values that I directly specified in sites/default/settings.php. He stopped seeing what I get from sites/settings.php and for this I have to transfer the necessary parameters from sites/settings.php to sites/default/settings.php
And after I set $settings['file_public_path'] = 'sites/default/files/public in sites/default/settings.php', then when I run drush cr css and js clears

I'm closing the issue because the problem turned out to be something else