readonly gets stripped

Hi,

I am using perch runaway 2.8.25. Also have setup HTML5 true is my config.php.

If I put 'readonly' tag in perch input field it get stripped. I tried with a) readonly b) readonly="true" c) readonly=true

none work.

<perch:form id="xyz" method="post" app="perch_forms"  novalidate="novalidate">

    <div class="field">

        <perch:label for="paper">Paper</perch:label>

        <perch:input type="text" id="paper" name="paper" class="textbox" readonly="true" />

    </div>

</perch:form>

Result in chrome web inspector

<input id="form1_paper" name="paper" class="textbox" type="text" required="required">

Here is diagnostic report

HEALTH CHECK

Perch is out of date. You are running Perch Runway 2.8.25 and the latest is 2.8.27. PHP 5.4.38 version is okay, but a little out of date. Consider updating soon. MySQL 5.5.48-cll is up to date Image processing available File upload size is low. You can only upload files up to 2M. Memory limit is low. Memory use is limited to 32M, which could cause problems manipulating large images. SUMMARY INFORMATION

Perch Runway: 2.8.25, PHP: 5.4.38, MySQL: mysqlnd 5.0.10 - 20111026 - $Id: c85105d7c6f7d70d609bb4c000257868a40840ab $, with PDO Server OS: Linux, cgi-fcgi Installed apps: content (2.8.25), assets (2.8.25), categories (2.8.25), collection_14 (2.8.25), collection_12 (2.8.25), collection_17 (2.8.25), collection_10 (2.8.25), perch_forms (1.8.3), collection_8 (2.8.25), perch_mailchimp (2.0.1), collection_9 (2.8.25), perch_members (1.1) App runtimes: <?php $apps_list = array( 'content', 'categories', 'perch_members', 'perch_forms', 'perch_mailchimp' ); PERCH_LOGINPATH: /perch PERCH_PATH: /home/caldoloradmin/public_html/perch PERCH_CORE: /home/caldoloradmin/public_html/perch/core PERCH_RESFILEPATH: /home/caldoloradmin/public_html/perch/resources Image manipulation: GD PHP limits: Max upload 2M, Max POST 8M, Memory: 32M, Total max file upload: 2M F1: dc1fef2ad0fcd9f943c02ebb43d85dbc Resource folder writeable: Yes DOCUMENT_ROOT: /home/caldoloradmin/public_html HTTP_HOST: staging.caldolor.com.au REQUEST_URI: /perch/core/settings/diagnostics/ SCRIPT_NAME: /perch/core/settings/diagnostics/index.php