Remove unnecessary changes. Added test

src/PhpSpreadsheet/Reader/Xlsx.php

@@ -48,7 +48,6 @@ class Xlsx extends BaseReader
      * @var ReferenceHelper
      */
     private $referenceHelper;
-
     /**
      * Xlsx\Theme instance.
      *
@@ -471,10 +470,9 @@ class Xlsx extends BaseReader
                     }
 
                     $xpath = self::getArrayItem($relsWorkbook->xpath("rel:Relationship[@Type='http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles']"));
-                    $xpathPath = strpos($xpath['Target'], '/') === 0 ? substr($xpath['Target'], 1) : "$dir/$xpath[Target]";
                     //~ http://schemas.openxmlformats.org/spreadsheetml/2006/main"
                     $xmlStyles = simplexml_load_string(
-                        $this->securityScanner->scan($this->getFromZipArchive($zip, $xpathPath)),
+                        $this->securityScanner->scan($this->getFromZipArchive($zip, "$dir/$xpath[Target]")),
                         'SimpleXMLElement',
                         Settings::getLibXmlLoaderOptions()
                     );

tests/PhpSpreadsheetTests/Reader/Xlsx/AbsolutePathTest.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace PhpOffice\PhpSpreadsheetTests\Reader\Xlsx;
+
+use PhpOffice\PhpSpreadsheet\Reader\Xlsx;
+use PHPUnit\Framework\TestCase;
+
+class AbsolutePathTest extends TestCase
+{
+    public static function testPr1869(): void
+    {
+        $xlsxFile = 'tests/data/Reader/XLSX/pr1769e.xlsx';
+        $reader = new Xlsx();
+        $result = $reader->listWorksheetInfo($xlsxFile);
+
+        self::assertIsArray($result);
+        self::assertEquals(3, $result[0]['totalRows']);
+    }
+}