TickEnd and TickStart does not work

[wpbloger]

Hey.
I started to use your library, and noticed a strange bug that I found TickEnd and TickStart, but I can still move the pin of range (TickEnd and TickStart)
Here's a screenshot:
Before the move::

After the move:

It is observed on the Android 4.2.2 (API 17) and Android 5.1.1 (API 22)

[wpbloger]

Here is an example on your demo application:

[firebaseempower]

I am also facing the same issue, is there is any solution available???