Map rotation

Easily the best of its kind. I am using the Android app.
I don't like the map rotating, so I have selected 

Map menu > Centred

 and 

Settings > App Settings > Disable rotation in Centred view.  

The map still rotates sometimes if I am not very careful when using two fingers to shrink or expand it. I haven't been able to work out what I am doing differently when it does.