Please headerLine.style.visibility = 'inherited' instead of 'visible'

My AJAX form has a 2-page tabbed pageFrame
Each page has a V 2.0 AW grid
When changing page, grid heading line remains visible

When creating the grid, setting headerLine.style.visibility to 'inherited' should solve the problem
How can I do that ?

Besides, I suggest style.visibility should be defaulted to 'inherited' (CSS default) for all objects.

Yes, this is a bug in grid CSS. For some reason I had a wrong idea how 'visibility:hidden' works, apparently parent element does not override the visibility of child elements as I thought.

For now it can be corrected with

.aw-hpanel-top, .aw-hpanel-top * {visibility:inherit!important}

unless you are going to hide the header row.