Gantt chart calendar part style


Can I make the calendar segment longer,like this

Gantt shows the calendar cells only when the tasks are displayed, and it is by design.
There is no way to change it by Gantt API, but you can change it via CSS:

.gantt_task_bg .gantt_task_row:last-child .gantt_task_cell{
  height:9999999 !important;

Here is the snippet that demonstrates how it works:

Thank you very much, my brother~