I use a TCRDBGrid with many columns and a filter bar and I've found a display bug if the dgRowSelect option is set for the grid.
When the grid is scrolled horizontally and I type in a filter expression, the grid jumps back to the leftmost column but the filter expression editor is still drawn to it's original position on the screen.
The search bar behaves the same way and if I clear the dgRowSelect option everything works fine.