Not supported by Selenium, adding note

changedetectionio/templates/edit.html

@@ -159,6 +159,8 @@ User-Agent: wonderbra 1.0") }}
                             {% else %}
                                 Headers can be also read from a file in your data-directory <a href="https://github.com/dgtlmoon/changedetection.io/wiki/Adding-headers-from-an-external-file">Read more here</a>
                             {% endif %}
+                            <br>
+                            (Not supported by Selenium browser)
                         </div>
 
                     </div>

changedetectionio/tests/test_request.py

@@ -13,7 +13,7 @@ def test_headers_in_request(client, live_server):
     #live_server_setup(live_server)
     # Add our URL to the import page
     test_url = url_for('test_headers', _external=True)
-    if os.getenv('PLAYWRIGHT_DRIVER_URL') or os.getenv('WEBDRIVER_URL'):
+    if os.getenv('PLAYWRIGHT_DRIVER_URL'):
         # Because its no longer calling back to localhost but from browserless, set in test-only.yml
         test_url = test_url.replace('localhost', 'changedet')