Apologies if this has already been reported elsewhere but the long standing issue of not being able to select some parts of a complex shape when it uses the Winding (Non-Zero) Fill Mode still exists in the latest Mac Affinity Designer (& Photo) beta:
Winding Fill select issue.afdesign (created in Designer 1.7.0.14)
This is independent of the complexity of the path. The same issue occurs in this Fill Mode example.afdesign created in Designer 1.6.1.