Summary

Reports showing years are showing the incorrect number of issues when drilling down into the data.

Steps to Reproduce

1. Data needs to be collected over many months to see the inconsistencies.
2. View a report showing past year by month
3. Click on the number for the month to expand the details

Expected Results

The number of issues for the month should for the calendar month. For example, February should return back all the results from February. If 5 issues are shown for February, 5 issues should be displayed.

Actual Results

Issues from March are included in February on the drilled down data, instead of 5 issues being shown 9 are displayed.

Notes

When using month this results in something like:
February 2017 is selected
Period calculated as March 2016 - February 2017
When calculating from this the start and end date for only February it uses the interval duration from first month, which is March.
The problem is that March has more days than February, so it comes up with a period overflowing into March.
The problem is even worse for January, as the code somehow calculated 1 December to 1 30 January as the period, since January has 31 days so it ends up in November before flattening that to the start of the month

Workaround

No workaround.