can’t get out of water in mc pe

i was swimming in an old world on mc pe. the version of minecraft was 1.11.4. i was swimming and when i went to get out of the water, i couldn’t get out. i screen recorded it and my sister who i was playing with had the same issue. i tried going in a different spot and i still couldn’t get out. please fix this bug as now i am stuck in the water. thank you!! haha i can’t insert the video because it’s bigger than 10.00 MB. it was on iOS 12