The QTI assessment system logs every single user click to the olat.log file. For some unkonwn reason the logger used for this is not the standard audit logger of OpenOLAT but a normal Log4J logger instance. This means, the logging output does not conform with the OpenOLAT standard logging output which contains information about the user who generated the logging line.
To reconstruct what exactly happend in a test it is mandatory to have the user information. Thus, the standard OpenOLAT logger OLog should be used.