[Evolution] "important" mails not reliably deleted from "important" folder

[Herr Oswald <herr_oswald gmx de>]

Hello,

I'm using imap with evo 3.28.5-0ubuntu0.18.04.1.

Often I mark messages as "important" and have a search folder where
these messages (status is important) are shown. Now when I try to
delete one of them from inside the "important" search folder, this
often fails.

Can someone confirm this?

Cheers,
Wolf