I cannot place a Text on the cube with rouded vertical corners. Rhino 6 forces only one from the exploded surfaces.
Hello- that is correct - the tool works on individual surfaces and not polysurfaces. It may, in a simple case like this, be possible to merge the cube face and the rounded corner - try
ShrinkTrimmedSrfToEdge then Explode the cube. Then
MergeSrf >Smooth=No a face and a corner, then the next face etc to work all the way around.