Make upgrade from 15.4 to 15.4.1.
This happens on the reports under the CA PPM folder in Jasper repository.
This was worked as designed.
The default report may be updated by content add-in and In 15.4.1 we updated OOTB reports that have DATE filters so that you need to update the filter.
In the future, the default report may be updated by content add-in.
Then if you use the report filter then please make a copy of the OOTB report and modify the copy.