Hello,
I've submitted the following as a defect but wanted to submit it here as well since it just seems like the particular functionality is just missing from reports.
Currently, if you have a report that renders the new Gantt and add that report to a dashboard you will notice that the columns on the Dashboard all shrunk to fit on the left side of the Gantt Segments. This does not happen on standard reports outside of dashboards. On reports the columns stay the same width thus allowing the Gantt to cover these important fields. Interestingly enough, both reports will have the same exact export. This export shows all columns as they would come out on the Dashboard(fit to scale on the new window to the left of the gantt).

