(Bug / Papercut) explode selection behaviour SubD vs PolySurface

comparing the behaviour of pre/post selection of a disjoint SubD vs. a polysurface:

how to repeat:
preselect a disjoint SubD and a Polysurface
the subd is unselected, the surface of the polysurface are

selection before _explode

selection after _explode

also exploded meshes stay selected.

subD should also stay selected

thanks - kind regards -tom