I had exactly this problem, and commented on it in the "bugs" thread ... but wasn't certain whether it was my lack of knowledge or a bug ... for there is a huge learning curve to this release.
I'd gone and turned off magnetic strength, was running as an administrator (a trick learned in 8.5) and still ... though I had set the snap to parcel at 1/32 triplets ... the highest resolution possible, in track view all I could get it to do was snap at the beginning and end of measures. It wouldn't budge or nudge for nothing.
I've upgraded my hardware since then, and have been busy trying to make everything work in the new system. Hence I've not been back to actually working on projects for a couple days now.
Once I get up and running, I'll report back and let you know if I'm still experiencing trouble with this.
Kev-