Situation:
We have a (simple) process which is triggered by a recurring timer event hourly (see attached screenshot). We run Camunda 7.7.0 on Apache Tomcat/8.0.37 (Java 1.8.0_131-b11) with Oracle 12.1c

Expected Behaviour:
The process is executed hourly. Process duration is recorded to be positive.

Actual Behaviour:
We observe that during the recent night of the CEST to CET this process was triggered almost 32000 times within a single hour. At least some of the process durations recorded in the database are negative.