Dynamic Queue puts me in my off-role twice as often as my main role

So this has been a simply massive frustration since Dynamic Queue has become a thing. In my past 20 games I've played Jungle(my main role) 6 times and Support(my off-role) 14 times. This is so frustrating. I love Jungling so much. I understand at times I have to play something else. But this is truly disproportionate. I'd much rather add a third choice when queuing up so that a decent proportion of the time, people can play what they want.

Riot please help fix this.