This was by design for v1, but re-analyzed and it can be added back and connected with the no-swipe-close Boolean prop (which was doing nothing; bug!).
Extract from addition to docs:
By default, QDrawer has touch actions attached to it. If this interferes with your drawer content components, disable it by specifying the Boolean no-swipe-close property.
This will be available in Quasar 1.0.0-beta.21