Stuck in terrain as Malphite on wall of Baron pit [GAMEPLAY]

While playing a ranked game as Malphite I was heading down to mid lane from top. On my way to flank the enemy team I had my camera on them watching what was going on and pinging on my way. It was taking a long while and despite the obvious path on the map I hadn't moved in a while. So I went back to see what the problem was and Malphite was stuck in the protruding part of the south wall of baron pit. I don't believe baron was there and clicking in any direction towards mid lane or inside the baron pit towards red side proved useless. I finally freed myself by clicking towards blue side directed towards top lane. I'm afraid I do not have any videos or pictures as I was really trying to focus on the game. It looked like maybe I was lagging as Malphite was continuously in motion despite not moving but it only turned out to be some kind of terrain bug. I hope you can look into this matter I don't know if this has happened a lot in the past. I did not click near the baron pit only towards mid lane so it's kind of curious how I ended up stuck in the first place.