Reinstalling a moved module throws “ InvalidArgumentException: Class "\Drupal\example\Form\ExampleForm" does not exist. in Drupal\Core\DependencyInjection\ClassResolver->getInstanceFromDefinition()”

That looks like the container rather than the cache.

Thanks for weighing in. So it is the container, which doesn't get refreshed, when uninstalling a module?

It’s possibly the opcode cache configuration in lando. I’d like to see someone reproduce it on a different platform.

It also happens in docker4drupal, like I wrote in the Issue Summary. But yeah, it would be nice if someone could check if it can be reproduced in for example DDEV.

Also, I am not sure if this is related, but it might help shed some light on this issue?

Even after going through all the steps under Disable caching → I still have to run drush cache:rebuild if I make a simple change, such as updating the path in a form's example.routing.yml file. Only after running drush cache:rebuild can I access the new path.

Shouldn't disabling all caches make manually clearing caches unnecessary?

I hit this also, same thing, cache rebuild doesn't fix it. My form was in a module in a custom folder, now I can't move it to contrib, I just published this module https://drupal.org/project/filehash_report
Originally I created the module with drush gen module

then I eventually published the module to contrib https://drupal.org/project/filehash_report

Now I'm unable to run this module from the contrib folder, Drupal 10.0.10 is complaining , it wants it in the custom folder. Similar error as above.

This works:
#2651144-71: Moving modules breaks system →

Thanks for confirming @joseph.olstad, that was also the conclusion I reached, under "The solution".