There can be multiple reasons to not show the request details in inspection view.
1) VSE logging level is set to ERROR or WARN mode in logging.properties file. You can change it to INFO as below:
Note that for performance environment the recommendation is to set the VSE log level to WARN or ERROR.
More information regarding VSE tuning in the link below:
2) Increase the buffer size for the the request event details by setting the property below in the local.properties file and restart the components.
For more information regarding this property in the link below:
3) If the quite option in the VSM steps is checked, uncheck the quite option, save and redeploy the service to the VSE.