diff --git a/browser/locales/en-US/chrome/browser/browser.properties b/browser/locales/en-US/chrome/browser/browser.properties
index 30ba063dddd1..7896702cc01b 100644
--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -702,8 +702,6 @@ processHang.add-on.label2 = “%1$S” is slowing down %2$S. To speed up your br
 processHang.add-on.learn-more.text = Learn more
 processHang.button_stop.label2 = Stop
 processHang.button_stop.accessKey = S
-processHang.button_stop_sandbox.label2 = Temporarily disable extension
-processHang.button_stop_sandbox.accessKey = A
 processHang.button_debug.label = Debug Script
 processHang.button_debug.accessKey = D
 
diff --git a/browser/modules/ProcessHangMonitor.jsm b/browser/modules/ProcessHangMonitor.jsm
index 969a9411fbfb..bc5face019b9 100644
--- a/browser/modules/ProcessHangMonitor.jsm
+++ b/browser/modules/ProcessHangMonitor.jsm
@@ -110,14 +110,6 @@ var ProcessHangMonitor = {
     this.handleUserInput(win, report => report.terminateScript());
   },
 
-  /**
-   * Terminate Sandbox globals associated with the hang being reported
-   * for the selected browser in |win|.
-   */
-  terminateGlobal(win) {
-    this.handleUserInput(win, report => report.terminateGlobal());
-  },
-
   /**
    * Start devtools debugger for JavaScript associated with the hang
    * being reported for the selected browser in |win|.
@@ -169,24 +161,6 @@ var ProcessHangMonitor = {
     }
   },
 
-  /**
-   * Stop all scripts from running in the Sandbox global attached to
-   * this window.
-   */
-  stopGlobal(win) {
-    let report = this.findActiveReport(win.gBrowser.selectedBrowser);
-    if (!report) {
-      return;
-    }
-
-    switch (report.hangType) {
-      case report.SLOW_SCRIPT:
-        this._recordTelemetryForReport(report, "user-aborted");
-        this.terminateGlobal(win);
-        break;
-    }
-  },
-
   /**
    * Terminate whatever is causing this report, be it an add-on, page script,
    * or plug-in. This is done without updating any report notifications.
@@ -577,22 +551,11 @@ var ProcessHangMonitor = {
         brandShortName,
       ]);
 
-      buttons.unshift(
-        {
-          label: bundle.getString("processHang.add-on.learn-more.text"),
-          link:
-            "https://support.mozilla.org/kb/warning-unresponsive-script#w_other-causes",
-        },
-        {
-          label: bundle.getString("processHang.button_stop_sandbox.label2"),
-          accessKey: bundle.getString(
-            "processHang.button_stop_sandbox.accessKey"
-          ),
-          callback() {
-            ProcessHangMonitor.stopGlobal(win);
-          },
-        }
-      );
+      buttons.unshift({
+        label: bundle.getString("processHang.add-on.learn-more.text"),
+        link:
+          "https://support.mozilla.org/kb/warning-unresponsive-script#w_other-causes",
+      });
     } else {
       let scriptBrowser = report.scriptBrowser;
       if (scriptBrowser == win.gBrowser?.selectedBrowser) {