In the Reports Date Range date picker. If you choose Last month, Last quarter, or Last year you get a full month, quarter, or year. But f you choose Recent 6 months you get 5 months plus whatever days in the current month have come to pass. Like this:
The Recent 6 months date range should return 6 full months. Not 5 months plus a few days in the current month. Same for the 3 and 12 month ranges. It's hard to compare trends in reports that show results in monthly columns when the last column only contains a few days.
This problem was discussed in the post below but that was closed without ever being converted to an Idea Post. It has also been discussed in posts related to Watchlists and Planned Spending.