Hi Gian Piero Truccolo,
Greetings from Syncfusion.
This update is mainly to get the confirmation of your reported issue to proceed with this without any misleading.
Can you please provide the detailed information on the reported query?
Are you expecting to scroll the scrollbar up to the right end of the Gantt?
Do you want to change the end date of the GanttChart?
Regards,
Sridevi S.