on RTL grid, with columnResizingMode=Widget, then dragging the resize splitter to the right, the rightmost column goes off the screen
on RTL, the behaviour should be opposite - the rightmost column should become smaller, and the leftmost larger
Thank you for your patience.
The column resizing behavior works incorrectly because the direction of the dataGrid's parent container is not set to RTL. We have modified your demo illustrating the left columns adjusting when the dir attribute of the dataGrid's container set to RTL.
If this is the behavior you are expecting for, please let us know.