1. http://db.pandawow.me/?spell=1856 and http://db.pandawow.me/?spell=1784 and http://db.pandawow.me/?spell=108208
2. When you use vanish, and into vanish you use stealth, it procs subterfuge and removes you from stealth. W/o getting any damage.
2.1 How to reproduce. - Use vanish, 1 second later use stealth, It procs subterfuge, you leave both stealths.
3. Should not proc subterfuge for using stealth inside vanish, unless you do or recieve hostile actions. (as it says in tooltip)
4. QA Realm
5. Today.
6. N/A no priority.