Mobile Bug: 1.0.11
Most likely to do with a minor bug of going right when you hold A after battles.
In Unsullied Meadows, I touched the yellow feather and went zooming into the wall. thankfully, I had a portal so I could get out of the situation.
The going right after battles usually does not put you through the wall, and has you going normal speed.
Edit: I had this happen in 1.1.2, even though it said it was fixed, this time I ran into an enemy before hitting a wall so I don’t know if I would have gone through or not, but it defiantly was faster than walking speed.
Also do not think the minor bug is caused by holding A after battles, rather randomly going right after interacting with objects/battling, but none of those have ever put me through a wall.