diff --git a/tests/Browser/Components/HtmlEditor.php b/tests/Browser/Components/HtmlEditor.php
new file mode 100644
index 000000000..40d71a393
--- /dev/null
+++ b/tests/Browser/Components/HtmlEditor.php
@@ -0,0 +1,97 @@
+<?php
+
+namespace Tests\Browser\Components;
+
+use App;
+use Tests\Browser\Browser;
+use Laravel\Dusk\Component;
+
+class HtmlEditor extends Component
+{
+    const MODE_PLAIN = 'plain';
+    const MODE_HTML  = 'html';
+
+    public $id;
+
+    /**
+     * Class constructor
+     */
+    public function __construct($id)
+    {
+        $this->id = trim($id);
+    }
+
+    /**
+     * Get the root selector for the component.
+     *
+     * @return string
+     */
+    public function selector()
+    {
+        return '#' . $this->id;
+    }
+
+    /**
+     * Assert that the browser page contains the component.
+     *
+     * @param Browser $browser
+     *
+     * @return void
+     */
+    public function assert($browser)
+    {
+        $browser->waitFor($this->selector() . '.html-editor');
+    }
+
+    /**
+     * Get the element shortcuts for the component.
+     *
+     * @return array
+     */
+    public function elements()
+    {
+        return [
+            '@plain-toolbar' => '.editor-toolbar',
+            '@plain-body' => 'textarea',
+            '@html-editor' => '.mce-tinymce',
+            '@html-toolbar' => '.mce-tinymce .mce-toolbar',
+            '@html-body' => 'iframe',
+        ];
+    }
+
+    /**
+     * Assert editor mode
+     */
+    public function assertMode($browser, $mode)
+    {
+        if ($mode == self::MODE_PLAIN) {
+            $browser->assertVisible('@plain-toolbar')
+                ->assertMissing('@html-body');
+        }
+        else {
+            $browser->assertMissing('@plain-toolbar')
+                ->assertVisible('@html-body');
+        }
+    }
+
+    /**
+     * Switch editor mode
+     */
+    public function switchMode($browser, $mode, $accept_warning = false)
+    {
+        if ($mode == self::MODE_HTML) {
+            $browser->click('@plain-toolbar a.mce-i-html');
+            if ($accept_warning) {
+                $browser->waitForDialog()->acceptDialog();
+            }
+            $browser->waitFor('@html-body');
+        }
+        else {
+            $browser->click('@html-toolbar .mce-i-plaintext');
+            if ($accept_warning) {
+                $browser->waitForDialog()->acceptDialog();
+            }
+            $browser->waitFor('@plain-body');
+        }
+    }
+}
diff --git a/tests/Browser/Mail/ComposeTest.php b/tests/Browser/Mail/ComposeTest.php
index b9b8812c6..a61025837 100644
--- a/tests/Browser/Mail/ComposeTest.php
+++ b/tests/Browser/Mail/ComposeTest.php
@@ -2,7 +2,9 @@
 
 namespace Tests\Browser\Mail;
 
+use Facebook\Webdriver\WebDriverKeys;
 use Tests\Browser\Components\App;
+use Tests\Browser\Components\HtmlEditor;
 
 class ComposeTest extends \Tests\Browser\TestCase
 {
@@ -65,4 +67,35 @@ class ComposeTest extends \Tests\Browser\TestCase
             $browser->assertVisible('#compose-attachments');
         });
     }
+
+    /**
+     * depends @testCompose
+     */
+    function testPlainEditor()
+    {
+        // Test for #7230: Shift+PageUp text selection
+        // and copy-pasting with keyboard
+        $this->browse(function ($browser) {
+            $browser->with(new HtmlEditor('composebodycontainer'), function ($browser) {
+                $browser->assertMode(HtmlEditor::MODE_PLAIN)
+                    ->type('@plain-body', "line1\nline2\n")
+                    ->keys('@plain-body', [WebDriverKeys::SHIFT, WebDriverKeys::PAGE_UP])
+                    ->keys('@plain-body', [WebDriverKeys::CONTROL, 'c'])
+                    ->keys('@plain-body', [WebDriverKeys::CONTROL, 'x'])
+                    ->keys('@plain-body', [WebDriverKeys::CONTROL, 'v'])
+                    ->keys('@plain-body', [WebDriverKeys::CONTROL, 'v'])
+                    ->assertValue('@plain-body', "line1\nline2\nline1\nline2\n");
+            });
+        });
+
+        // Test switching to HTML and back
+        $this->browse(function ($browser) {
+            $browser->with(new HtmlEditor('composebodycontainer'), function ($browser) {
+                $browser->switchMode(HtmlEditor::MODE_HTML, true)
+                    ->switchMode(HtmlEditor::MODE_PLAIN)
+                    ->assertValue('@plain-body', "line1\nline2\nline1\nline2")
+                    ->switchMode(HtmlEditor::MODE_HTML, false);
+            });
+        });
+    }
 }
diff --git a/tests/Browser/bootstrap.php b/tests/Browser/bootstrap.php
index 23442da68..01244d2d5 100644
--- a/tests/Browser/bootstrap.php
+++ b/tests/Browser/bootstrap.php
@@ -38,6 +38,7 @@ require_once(__DIR__ . '/Browser.php');
 require_once(__DIR__ . '/TestCase.php');
 require_once(__DIR__ . '/Components/App.php');
 require_once(__DIR__ . '/Components/Dialog.php');
+require_once(__DIR__ . '/Components/HtmlEditor.php');
 require_once(__DIR__ . '/Components/Popupmenu.php');
 require_once(__DIR__ . '/Components/Taskmenu.php');
 require_once(__DIR__ . '/Components/Toolbarmenu.php');