When accessing the Endpoint Protection Manager (SEPM) web console (https://<SEPM IP>:8443/console/apps/sepm) using Chrome 69.0.3497, scan commands are not issued when selected from Monitors > Logs > Computer Status log.
{FIXED_DOWNLOAD_LATEST_SEP.EN_US}
You can workaround the issue by issuing the command with the developer console open. (In Chrome: More Tools > Developer Tools > Console tab. )