Hello!
I am having an issue of the depicted brown square appearing in the header row, when the table exceeds the page width. Is this a known issue, and if so, is there a known solution to this?
Visual glitch when grid exceeds page width
Thank you for contacting us. We don’t have any similar issue reported and it looks like your column headers are modified. We will need to see a code demo (in StackBlitz or jsFiddle) to check the problem.