Hi, there is a bug in the default multiple files preview template. You can see in the demo if you select more than 1 file the preview icon is very small: https://demos.telerik.com/kendo-ui/filemanager/index
It's because it's missing the k-file-icon class.
<span class="k-icon k-i-file"></span>
Should be:
<span class="k-file-icon k-icon k-i-file"></span>
Hello, Luis,
You are absolutely correct. The described issue is a bug, hence, I have converted this thread to a bug report. Also, your Telerik Points are updated for pointing that issue out.
Please excuse us for the inconvenience caused by this bug.
Regards,
Nencho
Progress Telerik