Failed with

java.lang.AssertionError: Expect: [2, 1, 3] Result: [1, 2, 1, 3]: array lengths differed, expected.length=3 actual.length=4

onTextFieldDidScroll() is called after inject key B

dispatchDownAndUpKeyEvents(KeyEvent.KEYCODE_B);
>>>> onTextFieldDidScroll() is called here

We injected key a lot, why the  onTextFieldDidScroll() is only triggered here? feel like it could be source of flakiness.