When dragging the cornes of my mask I always have problems with dragging the small vector handles instead. How can I aviod this. When i have complicated masks its pretty annoing that its so hard to move a corners
You can remove the bezier handles by zooming into the vertex point on the mask and clicking it while pressing Alt (Windows) or Option (Mac). This will convert the point to a corner point without bezier handles.
If you need to add them back later, just press Alt (Windows) or Option (Mac) and click the corner point again.