Bug report

With LESS bootstrap theme, the scrollbar does not appear in the ListView if there are too many files.

Reproduction of the problem

1. Open this Dojo - https://dojo.telerik.com/@martin.tabakov@progress.com/eyuYetOh/6
2. Upload some files to fill the ListView.

Current behavior

The scrollbar does not appear when there are too many items in the ListView.

Expected/desired behavior

A scrollbar should appear

Environment

• Kendo UI version: 2020.3.1021
• Browser: [all]