Sensitivity starts lowering to default setting

Whenever I set the sensitivity to a higher setting, it stays that way. Then when I close the app completely, and come back, the sensitivity is lower than I have set it before

What I expected to happen was...:
The sensitivity option to stay permanently

What actually happened was...:
The sensitivity slider was lower when I came back

Steps to Reproduce:
1. Drag the sensitivity to 100%
2. Exit the app, then double-click the home button and exit Minecraft PE.
3. Come back and check the sensitivity, it will be lower than 100%

(You might want to repeat steps 2-3 at least 2 times, then, you will realize the sliding bar is actually getting lower every time.)

In the attachments show two photos, the first one is when I set the sensitivity all the way to 100%. Then I exited the app and came back and the second photo shows the sensitivity automatically set lower than I had put it.