Appium iOS, facing issue as automated step behaving different from manual step

I have a file manager sort of application to automate, that uses Polaris (with-in app) to create some document.

Problem is when I tap on Save menu (using its xpath) It open it up, but that window closes just after it. Whereas this thing works fine when I perform manually. I tried coordinate based also but same behavior. Even When I use Appium inspector to tap on it, same behavior.

request you to please help me out in it.