I have found some issues with 2.3.0.3 as well, that are not present on 2.2.0.5: It will fail to create a file on a bind mount when doing so as a non root user. Specifically when i try to restore an sqlserver-2019-based database from backup using a bind mount for the data directory, it will fail when restoring to a clean database and the database file (i.e databasename.mdf) is not present. The database process is unable to create the file on the bind mount.
This might be a breaking change, but correct behavior or a bug in docker, I dont really care at the moment. For now, I have reverted back to 2.2.0.5 again.
Edit: found the link to a github issue describing my error: https://github.com/docker/for-win/issues/7259