TreeView displays overlapped images

Original Reporter info from Mantis: motaz

• Reporter name: Motaz Abdel Azeem

Description:

When setting OverlayIndex property, images of Treeview overlapped

Steps to reproduce:

Set Image list to TreeView, then set OverlayIndex to tree nodes

Mantis conversion info:

• Mantis ID: 27938
• OS: Linux
• OS Build: Ubuntu 14.04
• Platform: x86_64
• Version: 1.4