Any way to make the vertical lines fill the rows

Currently I only get grid lines on rows that have tasks and not on row below those task rows

Is there any way to fill the rest of the gantt with these grid lines?

You can set required height for the line manually:

It not the today line I m trying to make go all the way down its the gridlines

Cells are rendered according to tasks. Unfortunately I can’t provide you with any workaround to fill the rest of the gantt.