I tried creating a stereo layer and all i get displayed is an “empty” stereo layer, instead of the selected texture i get the placeholder texture displayed. I created a project using 4.22 and there everything works just as it´s supposed to 
It doesnt matter if i select quad or cylinder as the layer shape.
Does anyone know a workaround for this problem or has anything changed since 4.22 that requires some sort of additional setting that i am missing? Would be awesome if someone could help 