UltraGridRow.AutoPreviewHeight not updated when UltraGridBand.AutoPreviewMaxLines is modified?

Hi Guys

2 versions of our product are using the same Infragistics4 15.2 libraries. In our previous version, when the AutoPreviewMaxLines is modified for the UltraGridBand, the selected row's AutoPreviewHeight is automatically updated to reflect the new height. However, in our current version of code, the AutoPreviewHeight was not automatically updated when the same change is made.

Can someone point to a direction to research for the cause of this different behavior?

Thanks in advance.

Richard Zhu