Borders are not complete on rowspanned columns using HTML reader

[andrasf]

This is:

- [ x] a bug report
- [ ] a feature request
- [ ] **not** a usage question (ask them on https://stackoverflow.com/questions/tagged/phpspreadsheet or https://gitter.im/PHPOffice/PhpSpreadsheet)

What is the expected behavior?

What is the current behavior?

What are the steps to reproduce?

Please provide a Minimal, Complete, and Verifiable example of code that exhibits the issue without relying on an external Excel file or a web server:

<?php

require __DIR__ . '/vendor/autoload.php';

// Create new Spreadsheet object
$spreadsheet = new \PhpOffice\PhpSpreadsheet\Spreadsheet();

// add code that show the issue here...
$reader = new \PhpOffice\PhpSpreadsheet\Reader\Html();
$spreadsheet = $reader->loadFromString('<table><tr><td style="border: 1px solid black;">NOT SPANNED</td><td rowspan="2" style="border: 1px solid black;">SPANNED</td></tr><tr><td style="border: 1px solid black;">NOT SPANNED</td></tr></table>');
$writer = \PhpOffice\PhpSpreadsheet\IOFactory::createWriter($spreadsheet, 'Xls');
$writer->save(__DIR__ . '/test.xls');

Which versions of PhpSpreadsheet and PHP are affected?

PhpSpreadsheet 1.11.0
PHP 7.3.13

[stale]

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