diff --git a/lib/form/url.js b/lib/form/url.js
index c85326a1a67..d1b793dbd30 100644
--- a/lib/form/url.js
+++ b/lib/form/url.js
@@ -12,5 +12,8 @@ M.form_url.init = function(Y, options) {
 };
 
 M.form_url.callback = function (params) {
-    document.getElementById('id_externalurl').value = params.url;
+    // Get the first child of type 'input' within the wrapper div associated with the filepicker's id.
+    var urlElement = document.getElementById('url-wrapper-' + params.client_id).getElementsByTagName('input')[0];
+    urlElement.value = params.url;
+    urlElement.focus();
 };
diff --git a/lib/form/url.php b/lib/form/url.php
index ddfc6a6158d..93f0cba0441 100644
--- a/lib/form/url.php
+++ b/lib/form/url.php
@@ -48,6 +48,9 @@ class MoodleQuickForm_url extends HTML_QuickForm_text implements templatable {
     /** @var bool if true label will be hidden */
     var $_hiddenLabel=false;
 
+    /** @var string the unique id of the filepicker, if enabled.*/
+    protected $filepickeruniqueid;
+
     /**
      * Constructor
      *
@@ -122,6 +125,7 @@ class MoodleQuickForm_url extends HTML_QuickForm_text implements templatable {
 
         // Print out file picker.
         $str .= $this->getFilePickerHTML();
+        $str = '<div id="url-wrapper-' . $this->get_filepicker_unique_id() . '">' . $str . '</div>';
 
         return $str;
     }
@@ -130,7 +134,7 @@ class MoodleQuickForm_url extends HTML_QuickForm_text implements templatable {
         global $PAGE, $OUTPUT;
 
         $str = '';
-        $clientid = uniqid();
+        $clientid = $this->get_filepicker_unique_id();
 
         $args = new stdClass();
         $args->accepted_types = '*';
@@ -186,6 +190,13 @@ EOD;
     public function export_for_template(renderer_base $output) {
         $context = $this->export_for_template_base($output);
         $context['filepickerhtml'] = !empty($this->_options['usefilepicker']) ? $this->getFilePickerHTML() : '';
+
+        // This will conditionally wrap the element in a div which can be accessed in the DOM using the unique id,
+        // and allows the filepicker callback to find its respective url field, if multiple URLs are used.
+        if ($this->_options['usefilepicker']) {
+            $context['filepickerclientid'] = $this->get_filepicker_unique_id();
+        }
+
         return $context;
     }
 
@@ -198,4 +209,15 @@ EOD;
         return true;
     }
 
+    /**
+     * Returns the unique id of the file picker associated with this url element, setting it in the process if not set.
+     *
+     * @return string the unique id of the file picker.
+     */
+    protected function get_filepicker_unique_id() : string {
+        if (empty($this->filepickeruniqueid)) {
+            $this->filepickeruniqueid = uniqid();
+        }
+        return $this->filepickeruniqueid;
+    }
 }
diff --git a/theme/boost/templates/core_form/element-url.mustache b/theme/boost/templates/core_form/element-url.mustache
index ee93c29acac..b18df79ea66 100644
--- a/theme/boost/templates/core_form/element-url.mustache
+++ b/theme/boost/templates/core_form/element-url.mustache
@@ -1,5 +1,8 @@
 {{< core_form/element-template }}
     {{$element}}
+        {{#element.filepickerclientid}}
+            <div id="url-wrapper-{{element.filepickerclientid}}" class="d-inline-block">
+        {{/element.filepickerclientid}}
         <input type="url"
                 class="form-control {{#error}}is-invalid{{/error}}"
                 name="{{element.name}}"
@@ -13,6 +16,9 @@
                     readonly {{#element.hardfrozen}}disabled{{/element.hardfrozen}}
                 {{/element.frozen}}
                 {{{element.attributes}}} >
+        {{#element.filepickerclientid}}
+            </div>
+        {{/element.filepickerclientid}}
         {{^element.frozen}}
             {{{element.filepickerhtml}}}
         {{/element.frozen}}