The history on `Number of outstanding reports` chart has changed

[rremilian]

Hello,

I use CodeChecker on a project for almost two years now.
I noticed recently that the history on Number of outstanding reports chart has changed. More exactly, the number of outstanding reports is lower now for January this year, than it was 1 or 2 months ago.
For more context, I run CodeChecker once per week via CI/CD using CodeChecker analyze command and after that I use CodeChecker store to store the results under the same run name.
As a side note, I am using CodeChecker 6.26.1 and it was not updated recently.

What could cause the history on Number of outstanding reports chart to change ?

Thanks !