Pushpull bug?

Create basic spline

Extrude up and pushpull

Push back

The more the spline is complicated the worse results i get

hi @ivan.galik I’m not getting those singe surface artifacts here. It does in some cases break, but differently. Pls always try to add the file that is showing this, even though it might look super simple.

pushpullbug.3dm (253.5 KB)
i suspected angle tolerance but it does not seem to affect

Thanks, RH-76148 Pushpull fails to remove all