When
gantt.config.date_scale = "%Y-W%W";
gantt.config.scale_unit = "week";The first week of the year is rendered with the previous year. See the attached image…
I can confirm the issue, unfortunately there is no easy way to fix it ( because first week of 2014 is really has starts in year 2013 )
We will try to provide better solution in one of next versions.
Ok. Thanks for checking.