perch:help tags in blog post template

Woops, sorry! Help is output as expected on standard Perch content templates but just not on the blog for some reason.

Thanks again.

post.html:

<perch:help>
<p>The main content region of a page (or post) is made up of the following blocks, which are a bit like layers on a cake; just click the + sign beside the content type you want to add. Drag and drop the blocks to reorder them on the page.</p> 
</perch:help>
<article class="h-entry post">
    <h1 class="p-name"><perch:blog id="postTitle" type="text" label="Title" help="[ keep short and concise (but descriptive!) as it's used to form the post URL ]" required="true" size="xl autowidth" order="1" /></h1>
    <p class="meta"><svg role="img" class="icon"><title>Published date</title><use xlink:href="#icn-info" /></svg> Posted on <time class="dt-published" datetime="<perch:blog id="postDateTime" type="date" label="Date" time="true" format="Y-m-d H:i:s" order="2" />"><perch:blog id="postDateTime" type="date" time="true" format="F jS, Y" /></time> <perch:if exists="authorGivenName">by <span class="p-author h-card"><perch:blog id="authorGivenName" type="hidden" /> <perch:blog id="authorFamilyName" type="hidden" /></span></perch:if> in <perch:categories id="categories" set="blog" label="Categories" display-as="checkboxes" divider-before="Post category (tags are under Meta and Social tab)"><a href="/blog/category/<perch:category id="catSlug" type="slug" />/" class="p-category"><perch:category id="catTitle" type="smarttext" /></a><perch:if not-exists="perch_item_last">, </perch:if></perch:categories></p>
    <perch:if exists="image"><perch:template path="blog/_blog_image_main.html" rescope="parent" /></perch:if>
    <div class="description e-content">
        <perch:blocks order="8"><perch:template path="blog/_post_blocks.html" rescope="parent" /></perch:blocks>
    </div>
    <perch:if exists="tags_html"><perch:blog id="tags_html" type="hidden" encode="false" /></perch:if>
</article>
<perch:template path="content/_sharing_icons.html" rescope="parent" />
<!--* SUPPRESSED ITEMS *-->
<perch:blog id="postURL" type="hidden" suppress="true" />
<perch:blog id="excerpt" type="textarea" label="Summary / Excerpt" help="[ displayed only on blog listing and archive pages ]" markdown="true" suppress="true" size="l autowidth" divider-before="Post content" order="7" />

Diagnostics:

Perch Runway: 3.0.10, PHP: 5.6.31, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $, with PDO
Server OS: Darwin, apache2handler
Installed apps: content (3.0.10), assets (3.0.10), categories (3.0.10), perch_blog (5.6.1), perch_forms (1.9)
App runtimes: <?php $apps_list = [ 'perch_blog', 'perch_forms', ];
PERCH_LOGINPATH: /perch
PERCH_PATH: /Users/adam/Sites/hiddenireland.com/site/perch
PERCH_CORE: /Users/adam/Sites/hiddenireland.com/site/perch/core
PERCH_RESFILEPATH: /Users/adam/Sites/hiddenireland.com/site/perch/resources
Image manipulation: GD
PHP limits: Max upload 32M, Max POST 32M, Memory: 128M, Total max file upload: 32M
F1: 3b606135b33e6a102526838f4152a807
Resource folder writeable: Yes
HTTP_HOST: hiddenireland.dev
DOCUMENT_ROOT: /Users/adam/Sites/hiddenireland.com/site
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php

No, single blog and single post template.

Thanks Drew. If it's any help, I just checked it on a fresh local install, where it's also not working:

Summary information

Perch Runway: 3.0.10, PHP: 5.6.31, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $, with PDO
Server OS: Darwin, apache2handler
Installed apps: content (3.0.10), assets (3.0.10), categories (3.0.10), perch_blog (5.6.1), perch_forms (1.9.1)
App runtimes: <?php $apps_list = [ 'perch_blog', 'perch_forms', ];
PERCH_LOGINPATH: /perch
PERCH_PATH: /Users/adam/Sites/ballyvolanehouse.ie/site/perch
PERCH_CORE: /Users/adam/Sites/ballyvolanehouse.ie/site/perch/core
PERCH_RESFILEPATH: /Users/adam/Sites/ballyvolanehouse.ie/site/perch/resources
Image manipulation: GD
PHP limits: Max upload 32M, Max POST 32M, Memory: 128M, Total max file upload: 32M
F1: 3b606135b33e6a102526838f4152a807
Resource folder writeable: Yes
HTTP_HOST: ballyvolanehouse.dev
DOCUMENT_ROOT: /Users/adam/Sites/ballyvolanehouse.ie/site
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php

But is working on an older Runway 2 site:

SUMMARY INFORMATION

Perch Runway: 2.8.32, PHP: 5.6.31, MySQL: mysqlnd 5.0.11-dev - 20120503 - $Id: 76b08b24596e12d4553bd41fc93cccd5bac2fe7a $, with PDO
Server OS: Darwin, apache2handler
Installed apps: content (2.8.32), assets (2.8.32), categories (2.8.32), perch_blog (5.0), perch_forms (1.8.3), collection_1 (2.8.32)
App runtimes: <?php $apps_list = array( 'content', 'categories', 'perch_blog', 'perch_forms', );
PERCH_LOGINPATH: /perch
PERCH_PATH: /Users/adam/Sites/kellswholemeal.ie/dev/perch
PERCH_CORE: /Users/adam/Sites/kellswholemeal.ie/dev/perch/core
PERCH_RESFILEPATH: /Users/adam/Sites/kellswholemeal.ie/dev/perch/resources
Image manipulation: GD
PHP limits: Max upload 32M, Max POST 32M, Memory: 128M, Total max file upload: 32M
F1: 2edba60ed1f613d6dd804feb202456a2
Resource folder writeable: Yes
HTTP_HOST: kellswholemeal.dev
DOCUMENT_ROOT: /Users/adam/Sites/kellswholemeal.ie/dev
REQUEST_URI: /perch/core/settings/diagnostics/
SCRIPT_NAME: /perch/core/settings/diagnostics/index.php