Trio Dynamic Queue Bug
Gyazo
If 3 people queue together and they choose the following preferred roles:
Person A: Mid/Top Person B: Top/Mid Person C: Fill
The queue will not work and you will need more variety in role preference.
HOWEVER, if 3 people queue together and they choose the following preferred roles:
Person A: Mid/Top Person B: Top/Mid Person C: Sup/JG (or anything other than mid or top)
The queue will work. Furthermore, if Person C chooses Sup/Fill, it also will not work.
I think this is definitely a bug.