When the views.grid option of the FileManager is used and the filterable option is enabled, the filter menu is empty. Also the 'Date Created' column is empy.
Currenlty, the filter menu of the Grid in the 'Grid View' is empty. The 'Date Created' column does not show the dates.

The filter menu in the 'Grid View' and the 'Date Created' column of the FileManager should be not be empty.

As a temporary workaround, the fields of the model could be defined with lowercase. Here is a Dojo example where the workaround is applied.
The dojo provided will not show value in the Date Created column as the created field is missing from the data. Here you are a corrected dojo example: https://dojo.telerik.com/OtOrIwOw/2.
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The dojo provided will not show value in the Date Created column as the created field is missing from the data. Here you are a corrected dojo example: https://dojo.telerik.com/OtOrIwOw/2.