Group by - save tree structure

Gantt
#1

I am using gantt V8
Even after using save_tree_structure to true the groupby is still showing only chlid task
do i need to add any other thing or am i missing something

#2

Hello,
Gantt doesn’t display tasks with the project type in the group mode:
https://docs.dhtmlx.com/gantt/desktop__grouping.html#:~:text=The%20’project’%20tasks%20from%20the%20original%20dataset%20won’t%20be%20displayed%20in%20the%20grouping%20mode

If you want to see these tasks, you need to convert them to tasks after grouping the data. And when you ungroup tasks, you need to convert them back.

It is possible to make the tasks look like project tasks by adding custom styles:
https://docs.dhtmlx.com/gantt/desktop__colouring_tasks.html

Here is an example of how it can be implemented: