Horizontal/grid mode listbox doesn't show values in some cases

[veinfors]

In some cases, when rendering a listbox in horizontal/grid mode and the cells are small, the text doesn't fix inside the cell and the cell some times look completely empty.

It seems to be too much padding within the cell.
Also, when the cell is really small, it would be better to not show the tick icon for selected cells and instead give more room for the cell value/text.