At the mission "Set up camp outside town", I arrived at the area shown in the pictures, I tried rolling from the far left to the stone island, I didn't make the roll and got stuck in the deep water, I managed to roll to another spot however still in the deepwater, I cannot go to a higher elevation. Rolling is the only means of movement in this spot, walking simply allows me to walk on the spot.

(Due to an error unable to directly attach pictures, therefore I am providing imgur links to the two pictures that are referred to)
https://imgur.com/rwerUdE
https://imgur.com/LETmUJ7

Steps to reproduce:
1) Stand at the far left edge of the pond, directly to the right of the big bush
2) Attempt a roll towards the open corner of the first stone island that has its edge next to deep water
3) Fail to reach the island and get stuck in place in the deepwater tile directly next to the island
4) Roll to another spot (within roll distance) in the deep water to relocate.