PL 5.1, better filter options, but still only half the way

[Egregius ([Greg] (Micro 4/3 + Win11))]

Maybe this is still current:

PL4 watermarking — problem with transparency when scaling

Hello @zkarj, I have no connection to the MAC part. Please, tag either @akarlovsky or @SebinParis for such questions. Regards, Svetlana G.