Scrollbars customization
By default some of the components provide additional CSS styles, which are applied to their scrollbars, in order to achieve their target design.
Setting default scrollbar styles to components​
To use native scrollbar styles, you have to add the CSS style class .ui5-content-native-scrollbars
on the body element of your application.
Note: Because of some browser restrictions this setting takes affect if it is applied before the initial rendering of the compontents, which are using it.
Example 1:
<body class="ui5-content-native-scrollbars">
...
</body>