[Gameplay] Dragon bug

I noticed that occasionally when I clone I'm about to get hit by dragon and i clone and back off so that after I get attacked, he focuses the clone he'll just glitch and isn't able to find a target for a while. I have now had it 3 times where I did it to a near full HP dragon (once yes in ranked) where he targeted the clone and when it disappeared I was able to continue attacking it and it never locked onto a new target and proceeded to take out all it's health. I'm not sure why it happens but I know I can only recreate it with wukong and it has something to do with when it disappears, I just don't know how or why. I will download a recording software upon request and try to bug it if you want to see that it actually happens. This is patch 5.4 and I haven't tried in patch 5.5.