5.7.4 php-fpm
<?php
$mpdf = new mPDF('utf-8', $this->format, 11, 'Times New Roman', 15, 15, 15, 15, 5, 5, $this->orientation);
$mpdf->WriteHTML($this->html);
$mpdf->Output($this->filename, 'F');
<table border="1">
<tr>
<th style="text-rotate: 90"><p>Line1</p><p>Line2</p></th>
<th style="text-rotate: 90">Line1<br/>Line2</th>
</tr>
</table>
i get one line in th anytimes, but need two

has this bug been fixed?
is this issue closed?
No, bug is alive
Work Around: Use nested table
For Example:
<table border="1">
<tr>
<th text-rotate="90">Single Line Text</th>
<th>
<table>
<tr text-rotate="90">
<th>Line1</th>
<th>Line2</th>
</tr>
</table>
</th>
</tr>
</table>
Use: php _wordwrap_ function to split the long text into multiple strings.
Chiranjeevi819 Big big big Thank you. This answer helped me.!!!!!!!!!!
Most helpful comment
Work Around: Use nested table
For Example:
Use: php _wordwrap_ function to split the long text into multiple strings.