This is a follow-up to the initial issue → of the same name which cannot be re-opened.
As per the last 3 comments ( #7 → , #8, #9), the reported issue does not appear to be resolved: i.e. running drush cr deletes the asset_injector directory and breaks the current theme.
This can be manually fixed by changing ownership and group of the asset_injector directory and updating permissions, after doing so all appears to be ok until the next drush cr | updb | cron which will break it again.
I'm using asset injector 8.x-2.16 on a Drupal 9.5.3 multisite installation on Acquia.
For the above reasons, setting priority to major seems to make sense.
p.s. I've seen this warning a couple oftimes:
Warning: rmdir(/opt/drupal/docroot/sites/site-6/files/asset_injector): Permission denied in Drupal\Core\File\FileSystem->rmdir() (line 268 of core/lib/Drupal/Core/File/FileSystem.php).
Closed: works as designed
2.16
Code
You should change the user or permissions on the user that drush acts as. This module does not provide support for server setups or drush connections.