Irelia stun bugged?

Recently played a few games with an enemy Irelia, and I can't be 100% sure about this as I don't have time to precisely check health percentages while playing, but I believe her stun is consistently applying in situations where it should only be a slow. For example I have ~50% health, while her health bar appears to be ~90-100%, and I still get instantly stunned the moment she jumps on me. Just wanted to see if anyone else is noticing this or if I am just seeing things.