So, playing yesterday, I had several games as Malzahar. In which I laned against somebody with ignite almost every time, so when the fighting actually started and they used ignite on me with their full combo and etc. I died. Now, I didn't die because they dealt enough damage to kill me, I died because I had ~300 hp and the final tick on ignite straight killed me. Checked death recap and it added up to ~300 less than my max hp at that moment. Now, this could be a latency issue, but the fact that it happened to me twice got me thinking it wasn't. I have yet to test it in a custom game to see if it's some specific circumstances or it was just a visual bug that didn't show my HP dropping the final 300 from their damage.
But what made this interesting is the fact that ignite dealt about that much damage (the final bit) over it's whole duration. I'm not sure if it's a Malz glitch, ignite bug, or a latency issue, but the fact that the final tick is equal damage to the sum of the rest of the duration's damage is peculiar.
Call me crazy, but it happened, I'll begin testing today when my friends wake up :3