The content is properly generated:

<table id="setindexbox" class="metadata plainlinks dmbox dmbox-setindex" style="" role="presentation"><tbody><tr><td class="mbox-image" style="padding: 2px 0 2px 0.4em;"><a href="/wiki/File:DAB_list_gray.svg" class="image view-border-box"><img alt="Disambiguation icon" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/DAB_list_gray.svg/30px-DAB_list_gray.svg.png" width="30" height="23" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8c/DAB_list_gray.svg/45px-DAB_list_gray.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8c/DAB_list_gray.svg/60px-DAB_list_gray.svg.png 2x" data-file-width="220" data-file-height="168"></a></td>
<td class="mbox-text" style="padding: 0.25em 0.4em; font-style: italic;">This <a href="/wiki/Wikipedia:Set_index_articles" title="Wikipedia:Set index articles">article</a> includes a list of related items that share the same name (or similar names).<br><span style="font-size: 88%;">If an <a class="external text" href="//en.wikipedia.org/w/index.php?title=Special:Whatlinkshere/Template:Set_index_article&amp;namespace=0">internal link</a> incorrectly led you here, you may wish to change the link to point directly to the intended article.</span></td>
</tr></tbody></table>

just the table is hidden via styles - matching selector: .content .metadata

.content .tmbox, .content .ambox, .content #coordinates, .content .navbox, .content .vertical-navbox, .content .topicon, .content .metadata {
    /* display: none !important; */
}

.metadata is hidden by default in the mobile view where they generate clutter and negatively impact reading experience. They are collapsed into the page issues banner.

I'd suggest this is fixed on wiki either by adding a warning to the page that this template works differently on mobile or by overriding this rule on template pages.

Just to reiterate this (i've already mentioned this quite a few times). The english wikipedia interpretation of the hiding of metadata is only for article namespace. (The idea is that metadata is not part of the content, but a talk page doesn't care about a separation between 'content' and non-content, so there it's just fine).

Also pageissues collapsing only applies to ambox'es of course.

I've decided to make this local wiki change to reflect that reality.

Does this apply to other wikis?
If so we can put this rule in:
https://github.com/wikimedia/mediawiki-extensions-MobileFrontend/blob/master/resources/skins.minerva.content.styles/hacks.less

If you submit a patch I'll happily merge

In T166451#3335863, @Jdlrobson wrote:

Does this apply to other wikis?
If you submit a patch I'll happily merge

As far as I know, there is no standard definitions of the metadata class across the various languages editions.

Hmm, my change has some downsides that I did not considered.
https://en.wikipedia.org/w/index.php?title=Wikipedia:Village_pump_(technical)&oldid=786608865#Some_sort_of_glitch_in_mobile_view

Ideally, i think we should remove the .metadata stripping from minerva altogether.. For English Wikipedia that wouldn't be a problem, we could just fix our Common.css and Mobile.css.. For other languages however.. that might take years before they catch up with us or german wikipedia...
Uncertain how to proceed, esp. as i'm not sure how disruptive it would be to stop hiding .metadata on the wiki's other than en.wp

Anyone got ideas for how to experiment ?

Fixing page issues my help address this problem.