In android extension menus have tab ids, try this way of identifying them

host.js

@@ -28,6 +28,12 @@ function localHost(url) {
   return false;
 }
 
+function extensionHost(url) {
+  var res = url.startsWith(browser.runtime.getURL(""));
+  console.log("Extension URL?", res, url, browser.runtime.getURL(""));
+  return res;
+}
+
 function i2pHostName(url) {
   let hostname = "";
   if (url.indexOf("://") > -1) {

privacy.js

@@ -144,7 +144,6 @@ function ResetPeerConnection() {
     value: webrtc
   });
   rtc.then(AssurePeerConnection);
-
 }
 
 function EnablePeerConnection() {

scrub.js

@@ -313,6 +313,12 @@ var contextSetup = async function(requestDetails) {
         setcookie.then(onContextGotLog, onError);
         return requestDetails;
       }
+      console.log("(isolate)Request Details)", requestDetails);
+      if (extensionHost(requestDetails.url)) {
+        var tab = tabGet(requestDetails.tabId);
+        var mtab = tab.then(anyTabFind, onError);
+        return requestDetails;
+      }
       if (i2pHost(requestDetails.url)) {
         var setcookie = browser.cookies.set({
           firstPartyDomain: i2pHostName(requestDetails.url),
@@ -349,6 +355,13 @@ var contextSetup = async function(requestDetails) {
         return requestDetails;
       }
     }
+
+    console.log("(isolate)Request Details)", requestDetails);
+    if (extensionHost(requestDetails.url)) {
+      var tab = tabGet(requestDetails.tabId);
+      var mtab = tab.then(anyTabFind, onError);
+      return requestDetails;
+    }
     //var tab = tabGet(requestDetails.tabId);
     //var mtab = tab.then(anyTabFind);
     return requestDetails;