After deploying DLP 15.8 MP1 Endpoint Agent, there are no detections for printer channel in Browsers that use Chromium, such as Google Chrome and Microsoft Edge.
Endpoint Prevent Agent, DLP 15.8 MP1 release.
Known issue, addressed by a hotfix release.
Resolved via update - Download and deploy Hotfix 15.8.00109.01003 or a greater version. Public Hotfix downloads are available from support.broadcom.com.