After updating the warnings plugin from 8.10.1 to 9.0.1 the number of warnings is inconsistent. I'm compiling several applications, sharing some sources in one jenkins project. If there is a warning in a shared code, it is logged once per application. As I know, before the update this log entries resulted in a single warning in the model. After the update there is one warning with one sub-report per logentry.
 
 
 

This are the warnings of our last builds:

It seems there are two groups that alternate. Group A where the new warnings are One  and group B where the new warnings are greater 4.000. Ich checked the behavior in another project. Both numers are different there, but the effect is the same.

This are the effects of the different areas in both groups:

Warnings Trend shows sub-reports for A and B.

Overview

A	B
shows warnings	shows sub-reports

Details Table Summary

A	B
shows warnings	shows sub-reports

Details Table content

A	B
shows warnings	shows warnings

Details on warnings level

A	B
shows warnings	shows sub-reports