moveSelectionOverlay sometimes doesn't detect position

[jdarwood007]

While working with this plugin, I was having an issue with it on the very last line new row
Uncaught TypeError: Cannot read property 'bottom' of null
ext.overlay.js:155

I was able to work around this by modifying the script and finding the following line

            var position = grid.getCellNodeBox(activeCell.row, activeCell.cell);

And then added in:

            if (position == null) {
                position = grid.getCellNodeBox(activeCell.row - 1, activeCell.cell);
                var options = grid.getOptions();
                position.top += options.rowHeight;
                position.bottom += options.rowHeight;
            }

This hasn't solved my issue with after hitting enter that no new line shows up, but has resolved a console error.