My hoya is having issues, the worst of which I posted separately to try and figure out why a part of it is dying.
This part, however, is just entertaining:
Like the 'leaf pimple'?
I suspect this was supposed to be three different leaves, two of which are fused together and the third never really formed beyond the bump in the middle.
@threegardeners - could you fix this one, too? ("Hoya" in the title) Sorry.