Message attachments, relocated with Tbird in Dovecot maildir store, not openable; reversible by moving BACK to inbox?

[PGNet Dev]

On 5/19/22 3:12 AM, Virgo Pärna wrote:
> Check https://bugzilla.mozilla.org/show_bug.cgi?id=1589649
> It seems to be some problem with current codepage of Thunderbird. Only
> in my case it also failed to open in application. And it creates magic
> 27 byte files..

thx for the link.

of course, @ bug,  "won't fix". sigh.

here, my cache _were_ all turned off, and offline was off, too.

in the end, per your comments, I've settled on

   browser.cache.memory.capacity"   40000000
   browser.cache.memory.enable"   true
   browser.cache.memory.max_entry_size   40000000
   mail.imap.mime_parts_on_demand"   false
   mail.server.default.mime_parts_on_demand   false

easily deployed to user.js to prevent this for others.

thx!