Client not selecting the correct queue

Twice now, I've definitely selected the ARAM queue, and ended up in what looks like Summoner's Rift champ select. First one never started the actual game due to some other bug where the time sat at 0 without the game starting, so I felt justified in abandoning it, second one I deliberately quit (I was willing to believe I misclicked the first time, but the second time I was very careful). Definitely something weird happening with the queues. LeaverBuster is not currently my friend. 3rd time the charm, luckily.