I have created a few reports in my Service project, but from a few weeks till now I've been having this issue:
The breached series shows an accumulated amount of breached issues on the last day of the report (current day), showing breached issues from months and weeks before. It always shows in the current day and it adds up any new breached issues.
This screen shot is from Aug 28.
And this on is from today (Sept 8)
If I look at it tomorrow, today's data will be fine, but tomorrow's will show the high breached amount.
Should I be using an specific type of filter to avoid this?
As it is already mentioned in the previous comment, this is a bug which must be fixed. But if you need SLA reports to work ASAP, you may try additional SLA plugins to monitor which SLA goals are met or breached, and generate reports with this data.
For example, in SLA Time and Report for Jira add-on you can see these reports + a few other types of reports:
Hope this information was useful.
Have a great day.