When Xayah Passive is on, Can't destroy Illaoi Tentacles

So you know when those Illaoi mains are like I'm bored of top lane and want to try something different, what they usually go o is support. A couple weeks ago I was playing Xayah agaisnt an Illaoi main and it was the most cancerous experience I have ever had. Since xayahs kit is based on her feather blades, It was really hard not to proc that passive. But when the passive is on, I wasn't able to destroy the illaoi tentacles that make her the "1v5 queen". It really made me mad as that i couldnt hit them and I lost lane early but carried my team in the end. Please fix this!