[delta-dev] Read receipts setting not honored (one-way only)

Hello, I've been experiencing a strange problem with delta for quite a while now: even though I've selected the option to *send* so called "read receipts" I am not receiving them since at least June or so. The strange thing is that instead my client(s) *do* send out receipt upon on read events! Initially I've attributed the thing to https://github.com/deltachat/deltachat-core-rust/issues/1610 but seen that the bug seems long gone, I suspect something else is going on. To dig a little deeper I need some extra info: I've looked at some messages and it seems libdelta sends out an extra "Disposition-Notification" header only to *non* delta chat clients. How the "receiptiviness" if you allow me term :) is negotiated between clients? Does libdelta send some extra info only upon change setting events? I should probably add that I've also experienced a really bad upgrade back in August because F-Droid did bump the version to a major one after months and the process did not went well, no messages were received and I had to resort by making a backup, and importing the thing after an installation from the Play Store. Do libdelta checks data integrity/correct format before importing? I don't think this is the cause but am wondering if the backup was "somehow" corrupt. Thanks. -- Marco CONFIDENTALITY NOTICE: The information contained in this message as well as the attached file(s) is confidential/privileged and is only intended for the person to whom it is addressed. If the reader of this message is not the intended recipient or the employee or agent responsible for delivering the message to the intended recipient, or you have received this communication in error, please be aware that any dissemination, distribution or duplication is strictly prohibited, and can be illegal. Please notify us immediately and delete all copies from your mailbox and other archives. Thank you ------------------------------------------------------------------------ In ottemperanza con il nuovo Regolamento Europeo GDPR n. 679/2016, le informazioni contenute in questo messaggio sono riservate e confidenziali. Il loro utilizzo è consentito esclusivamente al destinatario del messaggio, per le finalità indicate nel messaggio stesso. Qualora Lei non fosse la persona a cui il presente messaggio è destinato, La invitiamo ad eliminarlo dal Suo Sistema ed a distruggere le varie copie o stampe, dandocene gentilmente comunicazione. Ogni utilizzo improprio è contrario ai principi del nuovo Regolamento Europeo GDPR n. 679/2016.