This problem occurs because the resource text wraps on two or more lines. To avoid this you have several options:
1. Remove text wrapping with the following css:
2. Increase RowHeaderWidth
. For example - RowHeaderWidth="500px"
3. Increase the row height. For example, try setting RowHeight
Or, you can try a combination of the above options.
Don't hesitate to contact us if you have additional questions or concerns.
the Telerik team