Cannot update core with composer after switching to core-recommended I tried to update core from 8.9.0 to 8.9.1 with composer require drupal/core-recommended:8.9.1 but I get the following error:
Your requirements could not be resolved to an installable set of packages.

Problem 1
- Can only install one of: drupal/core[8.9.1, 8.9.0].
- Can only install one of: drupal/core[8.9.1, 8.9.0].
- Can only install one of: drupal/core[8.9.1, 8.9.0].
- drupal/core-recommended 8.9.1 requires drupal/core 8.9.1 -&gt; satisfiable by drupal/core[8.9.1].
- Installation request for drupal/core-recommended 8.9.1 -&gt; satisfiable by drupal/core-recommended[8.9.1].
- Installation request for drupal/core (locked at 8.9.0) -&gt; satisfiable by drupal/core[8.9.0].

This is pretty confusing, I thought drupal/core was replaced by drupal/recommended?
I tried again with composer require drupal/core-recommended:8.9.1 --update-with-dependencies and it started to update core. Unfortunately drupal/core-composer-scaffold was not touched so I had to update it directly with an extra composer command.
Also I noticed that both of these were updated, I hope it is right:
- Updating drupal/core (8.9.0 =&gt; 8.9.1): Downloading (100%)
- Updating drupal/core-recommended (8.9.0 =&gt; 8.9.1)