Bit of an odd one, and perhaps not a bug at all, but while doing a “Tower Arena” echo in MoF I realized it’s possible to Shift onto the ledges encircling the middle of the map by executing a Synchronized Strike followed immediately with Shift. Basically it appears that Shift will maintain your vertical height from the Synchronized Strike leap animation. It is not possible to Shift onto the ledge from the center without this combination.
This might be entirely on purpose. If so, it’s a pretty neat mechanic for navigating vertical ledges for Rogue/Bladedancer.