Reports are stuck and not processing in Jaspersoft / Advanced Reporting. When looking at the Schedules page in Jaspersoft, it is observed that over 1000 schedules are present. The Reports and Jobs records that correspond to these Schedules are in the Processing status. The State of the schedules in Advanced Reporting show as Normal.
Most of the 1000 schedules were already paused manually. They were deleted manually from the UI, followed by a restart of the Jaspersoft Tomcat server.