I created a local Spam Flder and defined that folder in the spamsieve rule
Only the first bunch (one or more) messages I train as Spam will be marked and moved, They are colored then. The subsequent train as spam dont work at all.
attached is the rule with local Spam folder defined.
Those from first bunch show up in the log.
Bildschirmfoto 2020-12-02 um 17.18.451112392 100 KB