Yes, I guess I’m using the local index and the initial sync when I log in (I usually wipe the cache, cookies, site permissions et al. when I close the browser, Firefox or Vivaldi). However, if after the inbox and counters look as expected and I click on “Stop synchronization” and click again on the “Synchronize index”, the same once deleted messages pop up, the unread counter updates accordingly, the messages disappear again but this time the unread counter doesn’t update, still indicating the number of the new/deleted messages, when the inbox is empty… Logging out an in again repeats the events as described on my previous post.