'Overall Service Availability' bad info in case of nodeDown / nodeUp transition

I have some services managed through PassiveServiceMonitor / Passive status keeper. Services are corretly discovered and statuses correctly handled by an ad-hoc poller until a 'nodeDown' event occurs on the node.
When node comes up, the 'Overall Service Availability' page shows an incorrect data on the outage column, while other pages still show correct information.
The bug should be in java class used by jsp page
jetty-webapps\opennms\rtc\category.jsp.

Even if it's a visualization problem, the severity is Major because a lot of users trust this view and the info is a 'positive fake'.
See attached pdf for details.