The worst part is it's not a one-off issue, it's embedded all over in Android. Even the keyboard does it - when you tap a textarea typically there's a brief pause before the keyboard appears and shuffles everything around, so if you were trying to tap a suggestions list you're in for an unpleasant surprise because the keyboard pushed a button up under your finger.

Google Maps is probably the worst offender here because the Android app randomly adjusts its layout based on info it pulls over the network at startup, so over the course of 2-10 seconds buttons and menu items and the map itself will all shift around, making it a complete mystery what tapping the screen will actually do.

Try using spotlight search on iOS. Every single time I search for an app, without fail, I click on a web link that suddenly appeared in place.

This 100 times.