Got a case I can test with? Or at least describe your test, and where it was failing? Every time I’ve worked with it, it’s been solid so long as I had good UVs. Though I admit I probably didn’t test too rigorously because I just started using the tool that was built for the job.
Basically, I’m trying to squash this “Bad PR” for the PointOnPoly constraint because it’s the Right Way™ to do it, and if there’s something wrong with it, it needs to get fixed rather than worked around again. (Sorry if I’m being intense about this. When we were forced to make the XSI->Maya transition, I ran into this stuff a lot, and I got a little salty)