Yup, all buffs still appear in the pet window, and timer ticks correctly and everything. It just fails to trigger the proc. Once rebuffed, it works perfectly. Just a little nuisance.
Also a little curious is the fact that auras stick with pets after zoning, and actually do correctly apply their effects (this should not be happening, but I *think* the devs are aware of it). Again, not huge, but can probably be imbalanced at lower levels when someone's pet in crushbone is buffed with a raid aura

Shrug.