diff --git a/.github/workflows/screenshots.yml b/.github/workflows/screenshots.yml
index 239b6958d857..1a835fe1a660 100644
--- a/.github/workflows/screenshots.yml
+++ b/.github/workflows/screenshots.yml
@@ -33,7 +33,7 @@ jobs:
 
       - name: Run Selenium tests with screenshots
         working-directory: ./tests/
-        run: python -Wall runtests.py --verbosity=2 --noinput --selenium=chrome --headless --screenshots --settings=test_sqlite --parallel=2
+        run: python -Wall runtests.py --verbosity=2 --noinput --selenium=chrome --headless --screenshots --settings=test_sqlite --parallel=1
 
       - name: Cache oxipng
         uses: actions/cache@v4
diff --git a/django/contrib/admin/static/admin/js/SelectFilter2.js b/django/contrib/admin/static/admin/js/SelectFilter2.js
index 2100280220af..fde59d30293f 100644
--- a/django/contrib/admin/static/admin/js/SelectFilter2.js
+++ b/django/contrib/admin/static/admin/js/SelectFilter2.js
@@ -32,9 +32,8 @@ Requires core.js and SelectBox.js.
 
             // <div class="selector"> or <div class="selector stacked">
             const selector_div = quickElement('div', from_box.parentNode);
-            // Make sure the selector div is at the beginning so that the
-            // add link would be displayed to the right of the widget.
-            from_box.parentNode.prepend(selector_div);
+            // Make sure the selector div appears between the label and the add link.
+            from_box.parentNode.insertBefore(selector_div, from_box.nextSibling);
             selector_div.className = is_stacked ? 'selector stacked' : 'selector';
 
             // <div class="selector-available">
diff --git a/js_tests/admin/SelectFilter2.test.js b/js_tests/admin/SelectFilter2.test.js
index 533c24811c05..9a020d2c539a 100644
--- a/js_tests/admin/SelectFilter2.test.js
+++ b/js_tests/admin/SelectFilter2.test.js
@@ -10,8 +10,11 @@ QUnit.test('init', function(assert) {
     $('<div class="helptext">This is helpful.</div>').appendTo('#test');
     $('<select id="id"><option value="0">A</option></select>').appendTo('#test');
     SelectFilter.init('id', 'things', 0);
-    assert.equal($('#test').children().first().prop("tagName"), "DIV");
-    assert.equal($('#test').children().first().attr("class"), "selector");
+    assert.deepEqual(
+        Array.from($('#test')[0].children).map(child => child.tagName),
+        ["LABEL", "DIV", "DIV"]
+    );
+    assert.equal($('.helptext')[0].nextSibling.getAttribute("class"), "selector");
     assert.equal($('.selector-available label').text().trim(), "Available things");
     assert.equal($('.selector-available label').attr("id"), "id_from_label");
     assert.equal($('.selector-chosen label').text().trim(), "Chosen things");
diff --git a/tests/runtests.py b/tests/runtests.py
index ccfc3279ff6e..974ec257d51c 100755
--- a/tests/runtests.py
+++ b/tests/runtests.py
@@ -746,7 +746,10 @@ def paired_tests(paired_test, options, test_labels, start_at, start_after):
         options.settings = os.environ["DJANGO_SETTINGS_MODULE"]
 
     if options.selenium:
-        if multiprocessing.get_start_method() == "spawn" and options.parallel != 1:
+        if (
+            multiprocessing.get_start_method() in {"spawn", "forkserver"}
+            and options.parallel != 1
+        ):
             parser.error(
                 "You cannot use --selenium with parallel tests on this system. "
                 "Pass --parallel=1 to use --selenium."