Jira Dashboard Gantt Chart: Dates Doubtful Display

[Adrià Termes]

Hi Atlassian Community!

I am currently working on building a dashboard for a filtered part of a Jira project, and I have encountered the problem that even if in all the different Initiatives, Epics, User Stories, Raid Items (you can name them...)... have assigned a Start Date and an End Date with also a Requested Completion Date, I am not able to have the different Issues displaying such dates correctly in the chart, with all of them being extremely similar while actually differingin the monthly display I have enabled.

I have browsed the internet without any response, does anybody have encountered this specific issue and have some tips on how to tacle the problem? I would really appreciate your help!

Thank you!