Client bug?

I didn't have time to capture any valid proof, but I'm going to state that the client, on numerous occasions, has lagged out on me (given it could be my connection, or underlying firewalls or something). But numerous times in champ select I'll go to click confirm, or accept, and lock in my champion. The client doesn't register this, and will often boot me from the queue, and this time, I'm at a 30 minute penalty. I'm not sure if it's my computer, the client, or my connection, but given my reaction speed to most of the prompts (if the client gives them to me) I click them on time. I'm sure the issue is on my side of the spectrum, but it seems so heavy to punish players for things they cannot control. I don't get a warning, a tick, a ping, if I click accept and it doesn't register on my end, I'm booted. (and sometimes it'll say it registered and I locked in my pick it'll still say the opposite.) I'm sure there's little that will be done about this. But it's reflecting badly on my account, and my stability, and I'm not even entirely sure if it's my fault. I have a steady connection, my WiFi and client are up to date, I'm not sure what could possibly cause this issue. Let's say that the client didn't have any issues and my actions in the prompts went as normal, the entire game and game-play would be fine. My ping would be in the 20's, there wouldn't be any lag. The only issues I'm seeing are with the reactions of the client. Essentially I'm just stating I'm not sure what's going on, but it's very frustrating and very unintentional.