Grid Border not displayed on edge of splitAt()

When using the splitAt(cidx) the the right hand border is not displayed how do you rectify this ?

Unfortunately the issue cannot be reproduced locally. If the problem still occurs for you pleas,e provide with a complete demo, where the problem can be reconstructed.
Here you can find a tutorial about creating a complete demo:
docs.dhtmlx.com/auxiliary_docs__ … pport.html

viewtopic.php?f=2&t=38294&p=119341#p119341

If you look at the grid in the above post you will see no border between cols 1 and 2 (SOS and Site Name).

It doesn’t matter what browser is being used.

I have found out the problem the border colour is white.

How do you change the border color on a splitAt cell ?