Dragon Buff disappering after GA

I was playing and I had a . After doing the fifth dragon my team rushed into a figth a I proced my . After I revived i checked my buffs bar and saw that i didnt had the super dragon buff and I only had 4 dragon stacks while my teamates still had the buff and the 5 stacks. I didn't check if I had the buff before but I had the particle affect so I'm pretty sure i did. No sure if it´s a feature or a bug but if it´s a feature i don´t think it should.