On 6 Aug 2019, at 21.08, Mark Moseley via dovecot <dovecot@dovecot.org> wrote:

I've bisected this down to this commit:

git diff 7620195ceeea805137cbd1bae104e385eee474a9..97473a513feb2bbd763051869c8b7b83e24b37fa

Prior to this commit, anything updating the quota would do the right thing for any .INBOX.<something> folders (i.e. not double count the contents of "INBOX" against the quota). After this commit, anything updating quota (new mail, quota recalc, etc) does the double counting of INBOX.

Thank you for the bisect! We'll look into this.

Hi. I was curious if there were any fixes for this? We're still affected by this (and I imagine others are too but don't realize it). Thanks!

Looks like this happens only with Maildir++ quota. As a workaround you could switch to dict-file or "count" quota. Anyway added to internal tracking as DOP-1336.