Clarity filter causes artifacts when inside a group

[Thrasymachus]

When I put a clarity live filter layer inside a group, I get rectangular artifacts. They change size when I zoom in and out. The problem goes away when I move the live filter layer out of the group.

[MEB]

Hi Thrasymachus,
Welcome to Affinity Forums
When you say inside, I believe you mean in the group (or is it nested to the group's layer)? Do you mind attaching the file shown in your screenshot above please? I can provide an upload link if you wish to keep the file private.