Chart end dates should not be bound by End-of-Week

[Former user]

I've created a chart to show trends over time, with a data point for each sprint essentially. The problem is: even if I set a custom end date, the chart defaults to end of week. This throws off my reporting, because our sprints start and stop on Wednesdays. So, if using a custom date range, I'd like for the period dates to reflect the custom end date.

See attachment, where I've set the custom end date as 8/20/19, yet the last data point on the chart is 8/24/10