Yeah, though not per se, what's forbidden is "propagating totalitarism*" and "calling and working for toppling the state system**". And what constitute totalitarism is undefined, so while nobody afaik went to jail and the KPP party theoretically still exist, everything communist even starting to show in public place is hounded with constant infinite lawsuits by chuds, and KPP is left with like 5 members and no activity. Even internet sites hosted in Poland are immediately lawfared. Oh and the court decision is always the same: communism isn't totalitarian and communist symbols are allowed. Until next lawsuit that it.

*It's also the reason that a very rare but still sometimes happening lawsuits against nazis are inevitably turning into utter farce, because yelling "Heil Hitler" and saluting is like one thing most Poles would agree is totalitarian, so they are going into incredible mental contortions to prove it was not that, some well known bangers include "Roman salute" and "ordering 5 beers".

**Revolution, you can't mention you would want revolution