Ready Check Frozen Screen
After finishing a game of Summoner's Rift, my client started acting strange as I couldn't hit the "PLAY" button to return to the lobby window. My friend started a queue of ARAM and the ready check appeared. I clicked it once, and it didn't look like it took my input. After that everyone entered the lobby (including myself), but my ready check was still up, so I couldn't select runes, re-roll my champ, or any other such thing. Completely blocked from doing anything I continued playing as Zac (w/Custom Ashe runes, oof). After we lost, the Honor screen appeared...
I'm sure if I restart the client it will go away. This was my first encounter with the issue but I felt the need to submit a report because in the previous game mentioned above (Summoner's Rift) , my friend was playing Poppy and left the fountain but somehow ended up in an animation loop/lock where Poppy just ran from the Nexus turrets then teleported back and ran again over and over.