I'm using ArchiCAD 26 4022 USA FULL on macOS Monterey 12.6.2.
I have created curtain wall.
Then selected one of the panels and changed it to CW Double Door 26.
Then inside Leaf menu - I have selected Custom Door Leaf and selected my custom door leaf.
After that - door handles disappeared.
Note: it works fine with regular door objects, but not with curtain wall.