Hm interesting
I found this tho: 0005174: 1 mailbox not displaying correctly - SOGo | BTS
sogo.nu
I hope they will do something asap
EnglishEmpty message list. NGImap4ParserException: unsupported fetch key: nil
Ah, I also reported it internally a few days back.
Yes, same problem here. I hope they will sort that soon.
I post error screenshot also on Mantis bug report.
- Edited
@petar_kozic @PiotrE
Seems to be fixed in inverse-inc/sopec5c23fd
Can you try to update mailcow and see if it got fixed?
Did anyone expect this to be in the packages within 3 hours after it was pushed to git?
Wait for the renewed packages.
@MAGIC
I updated mailcow, same problem. Not solved.
Packages were updated yesterday evening.
Thank you very much @diekuh
I tested, seems to work well.
- Best Answerset by MAGIC
Fixed in mailcow/mailcow-dockerizedda6f510 then 
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