display issue: not 100% on scale, its 200% recomended) on both screens, so same scaling and resolution on both. Ive changed the scale on both screens to 100% and still black.
for the viewport: this didnt happend in V10 or previous V11 Rc1, the error occurs more frequently with corona layer or multisubobject, for exaple if you create a material that can be view on the viewport and then i try to display another map it wont work, also if i turn of the display on viewport option on the main material it wont come back if i tun it on, here is a video.