Horizontal ion-scroll not working

In the project that i am making i used ion-scroll two times and works perfect (vertical mode) but now i am trying to do an horizontal scroll and is not working, the scroll appear but i can't scroll nothing.

The HTML code is simple:

<ion-scroll direction="x" class="box">
    <div></div>
    <div></div>
    <div></div>
    <div></div>
    <div></div>
</ion-scroll>

and CSS:

.box {
    width: 60vw;
    height: 10vh;
    border: 1px solid black;
}

.box > * {
   display: inline-block;
   margin-right: 4vw;
   width: 20vw;
   height: 10vh;
   background: red;
}

Any suggestion? i am doing something wrong? i am missing something?

Thanks in advance