I built a form and embedded a preview pane in it. The preview pane displays the grid populated with the data from the data source. The problem is that the row height is abnormal. It is appearing 3 times the normal height of the grid rows. I am using Dynamics Ax 2012
Are you displaying an address, street name or similar?
Grids with a string field of an extended data type with a DisplayHeight property of 2 or more make the row height larger to accommodate the field. You can change the property on the FormStringControl as well.
The solution might be to change the DisplayHeight back to 1 on the control.