To reproduce: 
1. Drag and drop RadListView and set the ViewType to DetailsView
2. Add few rows and 2 columns. Set the font of items to Trebuchet MS
3. While resizing columns, the text jumped up. 

Workaround: 
Set the AllowArbitraryItemHeight property to true: 
this.radListView1.AllowArbitraryItemHeight = true;