Client Breaks When Queuing for a Match

So sometimes when I queue for a match and accept it, the client will vanish for a split second before reappearing and acting as if I'm not in a queue. I can hear the champ select music going on if it goes through, if it does not go through then it never finds another match, or at least doesn't TELL me when it does. Also, if I try to queue for another match then it says I can't because I'm already in a queue. So every time this happens I have to restart my client, sometimes forcing me to dodge. I saw a thread about this before patch 4.20 and I figured it was fixed by now, but it's not.