Split colums does not conserve colour after a sort


my grid contains a split(3). In DHTMLX 3.0 it’s OK, but in 4.6, when I sort the grid, the 3 colums does’nt conserve her colour’s line.
Before sort:

After sort, all the split’s lines are white:

Unfortunately the problem cannot be reproduced locally.
The following sample works well:
dhtmlx.com/docs/products/dhtmlxG … split.html
If the the problem still occurs for you please, provide with a simple complete demo or share with a demo link, where the issue can be reconstructed.
Here you can find a tutorial about creating a complete demo:
docs.dhtmlx.com/tutorials__auxil … pport.html

In this demo, the columns 2 & 3 are KO.
grid.zip (107 KB)

In dhtmlgrid there is no “light” skin.
Please, try to remove
from your html

It’s the same without “light”.
“light” is a personal skin.

Unfortunately the issue cannot be reproduced with the default skin.
If the problem still occurs for you please, try to create a custom skin using the online skin builder:

If the problem still occurs after that - pleas,e provide with the updated complete demo, where the problem can be reconstructed.