--- a/devtools/client/application/src/components/WorkerListEmpty.js
+++ b/devtools/client/application/src/components/WorkerListEmpty.js
@@ -66,17 +66,19 @@ class WorkerListEmpty extends Component 
         Localized({
           id: "serviceworker-empty-suggestions-debugger",
           a: a({ className: "link", onClick: () => this.switchToDebugger() })
         },
           li({ className: "worker-list-empty__tips__item" })
         ),
         Localized({
           id: "serviceworker-empty-suggestions-aboutdebugging",
-          a: a({ className: "link", onClick: () => this.openAboutDebugging() })
+          a: a({
+            className: "link js-trusted-link",
+            onClick: () => this.openAboutDebugging() })
         },
           li({ className: "worker-list-empty__tips__item" })
         ),
       )
     );
   }
 }
 

--- a/devtools/client/application/test/browser.ini
+++ b/devtools/client/application/test/browser.ini
@@ -16,8 +16,9 @@ support-files =
   !/devtools/client/shared/test/shared-head.js
   !/devtools/client/shared/test/telemetry-test-helpers.js
 
 [browser_application_panel_debug-service-worker.js]
 [browser_application_panel_list-domain-workers.js]
 [browser_application_panel_list-several-workers.js]
 [browser_application_panel_list-single-worker.js]
 [browser_application_panel_list-unicode.js]
+[browser_application_panel_open-links.js]

new file mode 100644
--- /dev/null
+++ b/devtools/client/application/test/browser_application_panel_open-links.js
@@ -0,0 +1,41 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const { Toolbox } = require("devtools/client/framework/toolbox");
+
+/**
+ * Check that links work when the devtools are detached in a separate window.
+ */
+
+const TAB_URL = URL_ROOT + "service-workers/empty.html";
+
+add_task(async function() {
+  await enableApplicationPanel();
+
+  const {
+    panel,
+    toolbox
+  } = await openNewTabAndApplicationPanel(TAB_URL);
+
+  const doc = panel.panelWin.document;
+
+  // detach devtools in a separate window
+  await toolbox.switchHost(Toolbox.HostType.WINDOW);
+
+  // click on the link and wait for the new tab to open
+  const onTabLoaded = BrowserTestUtils
+    .waitForNewTab(gBrowser, "about:debugging#workers");
+  doc.querySelector(".js-trusted-link").click();
+  info("Opening link in a new tab.");
+  const newTab = await onTabLoaded;
+
+  // We only need to check that newTab is truthy since
+  // BrowserTestUtils.waitForNewTab checks the URL.
+  ok(newTab, "The expected tab was opened.");
+
+  // close the tab
+  info("Closing the tab.");
+  await BrowserTestUtils.removeTab(newTab);
+});