Set up some filters that do not apply automatically un incoming mails (my personal workaround for the duplicate messages due to filtering problems) but configure them to be applied for manual filtering Then select a couple of mails, go to the contect menu and select "manually apply all filters" result -> Nothing happens expected result -> filters should be applied an mails moved to the correct folders as specified in the filters I am not 100% sure when this behaviour started, but at least with kmail/akonadi form the 17.04.03 release and I am quite certain that it alreadywas present with 17.04.02.
Not sure what changed after the latest update from openSUSE repos. But I can no longer reproduce the problem. -> Seems to be fixed.