Yesterday we updated the core from 18.104.22.1688 to 22.214.171.124 now we have the following issue when we reply a mail. (tried with webapp versions webapp-126.96.36.1997 & webapp-188.8.131.524)
In webapp the to mail adress shows the normal format firstname.lastname@example.org in postfix we are getting the following to header to==?utf-8?Q?=EF=BB=BFuseremail@example.com,
If we delete the original to mailaddress in webapp and put the same mailaddress. Then the e-mail goes out as normal.
New mail and reply on mails that we received after the update runs without any issues.