[GAMEPLAY] Nami Ulti on WW While Using Ulti

Hello, I was recently in a game where I was playing as Nami and was in lane with Quinn vs a WW and Tris. During our escape, WW attempted to use his ulti on our Quinn, and in an attempt to interrupt him, I used my ulti. However he finished his utli before my wave could reach him and it hit him while he was in chase with Quinn. However he seemed to be completely unaffected by the wave.

Steps to Replicate: 1: WW Ulti on Quinn 2: let WW finish Ulti 3: Immediately attempt to hit with Nami Ulti. 4: If done correctly, WW should be able to harmlessly walk through.