[GAMEPLAY] Vayne Q while in ult loses target

Vayne's Q has an awkward effect while in ult. Unsure if this is intended or not.

Outside of Ult when I target something and then cast Q, without any other input, Vayne will retain her attack order and chase/attack said target. However during ult, outside of auto range her Q will behave exactly like explained before and chase/attack said target, but if Q is casted inside her auto range, Vayne will lose her attack order and stand still.

• Target an enemy (Right click).
• When in ult as Vayne, Cast tumble near target inside her auto attack range.
• Cast tumble outside her auto attack range for comparison.

Again, unsure if this is intended to preserve the stealth effect on her tumble but it can disrupt her gameplay in tense situations.