Why is my index empty after pressing ‘Reindex’?

In case the indexing queue is enabled, pressing the ‘Reindex’ button will push indexing jobs to the queue. This means the indexing will happen only when the queue is running, and not immediately when the button is pressed. Please make sure the indexing queue is set up correctly and the amount of items to be indexed do not exceed the limits. More information about the indexing queue can be found here.