This has occurred multiple times for me on NA/LAN/PBE. What happens is when i click accept on a match it just sits there on the accept screen for a few minutes at which point it tells me i dodged a game and takes away my lp and gives me a dodge timer. It does this regardless of if you exit LOL during the wait on the accept screen. Last time it happened to me after about 2 minutes of waiting at the accept screen it gave me a dodge as usual, but then after chilling in store for a minute it jumps me right into a champ select where every time i try to change something it tells me i cant. It also leaves me with 0 time on lock in for minutes.
This bug needs to be fixed immediately, it is unacceptable to have issues that regularly impact the ranked ladder and ranked games.