My question is related to the Search API Drupal 8 module. I am modifying my configuration via config file updates. After I am installing my custom module, I can see my config reflected in the search index field settings via the configuration form. However, after I re-index I cannot find content via my newly defined fields. This works only, if I open the search index fields configuration form and submit it manually via webbrowser. No config changes - just hitting the save button.
Tried clearing the cache, entity updates, rebuild tracking information, rebuild the search index - nothing helps.
Can I implement anything into hook_install() from my custom module to propagate the necessary config changes properly to my database?