Installed with Composer but not in my module list.

Adding just to share.

I had a problem with four modules (three from composer, one custom) not showing up when running config import. I could use drush to "en" them, but config imports kept failing for "Unable to install module since it does not exist"

I was able to get around this by modifying ExtensionList.php and commenting out the cache retrieval section. Apparently even after numerous composer removes, deletes and composer requires, the modules were not getting scanned and put in the module list cache.

This is on Drupal 9.4.7.

274   public function getList() {
275     if ($this->extensions !== NULL) {
276       return $this->extensions;
277     }
278     /*
279     if ($cache = $this->cache->get($this->getListCacheId())) {
280       $this->extensions = $cache->data;
281       return $this->extensions;
282     }
283     */
284     $extensions = $this->doList();
285     $this->cache->set($this->getListCacheId(), $extensions);
286     $this->extensions = $extensions;
287     return $this->extensions;