Customize many columns until the scrollbar appears, then drag the scrollbar to the right, the data on the right is not refreshed.
demo: DHTMLX Snippets
Hello Virgil,
We know about that issue, it will be fixed in the future, but I cannot give you any ETA.
It happens, because the layout configuration is missing the scrollable: true parameter for the grid. You can specify it in the layout configuration and the grid will become scrollable: