OK, so could someone else test this...start up maya with display preferences as Direct x11 and apply a clump modifier, try editing the clumps/select seperate clump guides (turn yellow)....this doesnt work for me.
Now change display preferences to openGL - Core Profile, now do the same as before, apply clump try to select.....this works...at least for me it does. Is this a bug?
Cheers!