Just my 2 cents here: This behavior caused a TON of confusion in this thread even leading to a feature request that could have been avoided mostly. I became aware of this thread only recently (so no unfounded bias) and I think the PT should have behaved the same way as slurs. Or at least please provide the option for such behavior. As to why just not use slurs, please check: How do you write detailed orchestral lines without causing clutter?