In short, the Shintao monk strikes (Jade Strike and the others in that column) do not appear to count as a light move for finishers anymore. Easy to reproduce, just use those 3 strikes in the column one after the other and you do not get the healing ki light-light-light finisher. The healing curse still appears to work and the strikes do not appear to interrupt your sequence. For example I hit healing curse-healing curse-jade strike-healing curse and the healing ki finisher only popped up after the third healing curse, not after the jade strike as expected.
I would have bug reported in game but that tool doesn't seem to be working.