Wukong walks out of Galio ult without any sort of Cleanse.

Was playing Legend of the Poro King as Galio with the enemy team having a Wukong. Twice when I would ult, Wukong's character would walk out of my ult range and take no damage. It still shows the indicator for him being suppressed, yet he walks out. In the second clip, it appears as though he can't control his character while I'm still ulting, even though he walks out of range. Was pretty confident this was a bug, so I brought it here.