Practice Tool Dummy Bug

THIS IS IN PRACTICE TOOL!

I don't really know if this is a bug but when I was playing Yasuo, I had ignite and flash. So I got the dummy to like 10 HP, then I use ignite on the dummy. The dummy died. I don't know if this is a bug.

1. Place down a dummy
2. Get the dummy to 10 HP
3. Use ignite then keep hitting the dummy
4. There you go