[GAMEPLAY] Azir's ultimate bug playing Doom Bots of Doom

This bug happened to me playing Doom Bots of Doom, when I was using Azir. The thing is that I went in with the E-Q combo and then I used my ultimate (R) to move them towards our turret, and when I casted my ultimate I got killed by the bots. After that I realize that my ultimate is still up, like I could use it again, but it was on cooldown (I could check it pressing Alt + R, seeing in the chat that my ultimate had 70 seconds of cooldown). This bug happened to me twice, in differents games (But both playing Doom Bots), so maybe this happens only against Bots or just dying after using the ultimate, anyway, that's all what I wanted to explain about the bug.