Adding custom icons to files on desktop crashes explorer.exe C#

See more:

C#

I have a Windows service application to add custom icons to files and directories using .Net Framework 4.5.2 SharpShell library.

When I try to create a Microsoft Excel file on desktop, file icon moves to default file position on the desktop (top left).

If I create any other type of file (e.g. Microsoft Word), file gets created at the exact location where I clicked.

And if I create multiple Microsoft Excel files consecutively, explorer.exe crashes and restarts.

What can I do about it?

[ComVisible(true)]
   public class MyIconOVerlay: SharpIconOverlayHandler
   {
       protected override bool CanShowOverlay(string path, FILE_ATTRIBUTE attributes)
       {
           // some process
       }

       protected override Icon GetOverlayIcon()
       {
           return Properties.Resources.overlay_icon_inverted;
       }

       protected override int GetPriority()
       {
           return 50;
       }
   }

What I have tried:

I tried to create another task to add icons, different from actual explorer.exe process.