diff --git a/Event/ConsoleEvent.php b/Event/ConsoleEvent.php
index 89ab64559..4e00f7c73 100644
--- a/Event/ConsoleEvent.php
+++ b/Event/ConsoleEvent.php
@@ -28,7 +28,7 @@ class ConsoleEvent extends Event
     private $input;
     private $output;
 
-    public function __construct(Command $command = null, InputInterface $input, OutputInterface $output)
+    public function __construct(?Command $command, InputInterface $input, OutputInterface $output)
     {
         $this->command = $command;
         $this->input = $input;
diff --git a/Helper/Helper.php b/Helper/Helper.php
index 881b4dc4f..cfcbbd9a1 100644
--- a/Helper/Helper.php
+++ b/Helper/Helper.php
@@ -42,7 +42,7 @@ public function getHelperSet()
     /**
      * Returns the length of a string, using mb_strwidth if it is available.
      *
-     * @deprecated since 5.3
+     * @deprecated since Symfony 5.3
      *
      * @return int The length of the string
      */
@@ -154,7 +154,7 @@ public static function formatMemory(int $memory)
     }
 
     /**
-     * @deprecated since 5.3
+     * @deprecated since Symfony 5.3
      */
     public static function strlenWithoutDecoration(OutputFormatterInterface $formatter, ?string $string)
     {
@@ -170,7 +170,7 @@ public static function removeDecoration(OutputFormatterInterface $formatter, ?st
         // remove <...> formatting
         $string = $formatter->format($string ?? '');
         // remove already formatted characters
-        $string = preg_replace("/\033\[[^m]*m/", '', $string);
+        $string = preg_replace("/\033\[[^m]*m/", '', $string ?? '');
         $formatter->setDecorated($isDecorated);
 
         return $string;
diff --git a/Helper/HelperSet.php b/Helper/HelperSet.php
index 5c08a7606..679dceab1 100644
--- a/Helper/HelperSet.php
+++ b/Helper/HelperSet.php
@@ -89,8 +89,9 @@ public function getCommand()
     }
 
     /**
-     * @return Helper[]
+     * @return \Traversable<Helper>
      */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return new \ArrayIterator($this->helpers);
diff --git a/Helper/ProgressBar.php b/Helper/ProgressBar.php
index 91fba2b58..1c03a1d96 100644
--- a/Helper/ProgressBar.php
+++ b/Helper/ProgressBar.php
@@ -482,8 +482,10 @@ private function overwrite(string $message): void
                     }
                     $this->output->clear($lineCount);
                 } else {
-                    if ($this->formatLineCount > 0) {
-                        $this->cursor->moveUp($this->formatLineCount);
+                    for ($i = 0; $i < $this->formatLineCount; ++$i) {
+                        $this->cursor->moveToColumn(1);
+                        $this->cursor->clearLine();
+                        $this->cursor->moveUp();
                     }
 
                     $this->cursor->moveToColumn(1);
diff --git a/Tests/Helper/ProgressBarTest.php b/Tests/Helper/ProgressBarTest.php
index e424a29df..ef5f06222 100644
--- a/Tests/Helper/ProgressBarTest.php
+++ b/Tests/Helper/ProgressBarTest.php
@@ -812,7 +812,7 @@ public function testMultilineFormat()
         $this->assertEquals(
             ">---------------------------\nfoobar".
             $this->generateOutput("=========>------------------\nfoobar").
-            "\x1B[1A\x1B[1G\x1B[2K".
+            "\x1B[1G\x1B[2K\x1B[1A\x1B[1G\x1B[2K".
             $this->generateOutput("============================\nfoobar"),
             stream_get_contents($output->getStream())
         );
@@ -983,7 +983,7 @@ protected function generateOutput($expected)
     {
         $count = substr_count($expected, "\n");
 
-        return ($count ? sprintf("\x1B[%dA\x1B[1G\x1b[2K", $count) : "\x1B[1G\x1B[2K").$expected;
+        return ($count ? str_repeat("\x1B[1G\x1b[2K\x1B[1A", $count) : '')."\x1B[1G\x1B[2K".$expected;
     }
 
     public function testBarWidthWithMultilineFormat()
@@ -1095,4 +1095,33 @@ public function testNoWriteWhenMessageIsSame()
             stream_get_contents($output->getStream())
         );
     }
+
+    public function testMultiLineFormatIsFullyCleared()
+    {
+        $bar = new ProgressBar($output = $this->getOutputStream(), 3);
+        $bar->setFormat("%current%/%max%\n%message%\nFoo");
+
+        $bar->setMessage('1234567890');
+        $bar->start();
+        $bar->display();
+
+        $bar->setMessage('ABC');
+        $bar->advance();
+        $bar->display();
+
+        $bar->setMessage('A');
+        $bar->advance();
+        $bar->display();
+
+        $bar->finish();
+
+        rewind($output->getStream());
+        $this->assertEquals(
+            "0/3\n1234567890\nFoo".
+            $this->generateOutput("1/3\nABC\nFoo").
+            $this->generateOutput("2/3\nA\nFoo").
+            $this->generateOutput("3/3\nA\nFoo"),
+            stream_get_contents($output->getStream())
+        );
+    }
 }