Subfile row disapears when [has header] property set to true.

[vijo]

Hi
When try to add a header to a subfile (obtained via detect subfile pattern) the first row of the grid is replaced by the header. I expected that the header row would be added above the first row.

The same occurs when the option is added in Genie Designer or in the custom.js script.

I use version 5.12.