Are you encountering this on the web app? I am experiencing some consistency issues on web as well when trying to edit the rain skip. I will report this to the team, but for now, would you be able to make the change on your mobile app? If not, I can do it for you. Just let me know!
PS- If you would like, I can also help you try and find a more accurate weather station so you don't have to disable any Weather Intelligence...