Hi Martin,
Thank you for your update and details.
ReasonEssential Grid uses a MouseController architecture to manage mouse actions. If you highlight a selection range, and place the cursor on a border, you get a Drag & Drop cursor. Also if you move over a grid cell border, you get a cursor for sizing. This Drag and Drop cursor overlaps the sizing cursor causes the issue.
SolutionYou can avoid this by turn off the OleDataSource flag in the ControllerOptions .
his.gridControl1.ControllerOptions = this.gridControl1.ControllerOptions & ~GridControllerOptions.OleDataSource;
Here is the video file:
http://www.syncfusion.com/Support/user/uploads/ResizeRows_8609e8a3.zipKindly let us know if you need any further assistance.
Note:
Please post your queries under Grid(Windows Forms) Forums to get immediate reply. Here is the link:
http://www.syncfusion.com/support/forums/forum.aspx?&ForumID=6Best Regards,
Jeba.