Every now and then, some of my users are not able to either send or save their mails. They will typically start writing an email, and when they hit the “Send”-button, either nothing happens, or, they will get the message “could not save”. It’s not a case where they have had the mail open for editing for several hours or so, only for a few minutes. If they open a new mail, they have no problems sending/saving it. I’m unable to see any pattern, or able to reproduce it. It typically happens once every 50 mails or so, so not that frequent. One workaround is to just copy the body and subject into a new email and then send it.
We are on WebApp: 18.104.22.1688-26.1 Kopano Core: 8.3.4-12 and newest DeskApp.
It looks a little bit like this post: could-not-save
Anybody else seen this behavior? Any tips where/hop to debug this?