If we can fix the layout issues or get the template updated great, but if not, or it will complex, lets hide these for now.

Looks to be a template issue... all funky on mobile web too:

Looking into it...

Funky times on desktop too...

As seen in the desktop screenshot above, the template, and the navbox templates above and below it, haven't been optimized for narrow screen layouts.

I was going to tweak it, but given how it lays out on desktop when the screen is wide, I think it may be a bit of a rabbit hole and may be better to just hide it as we do the surrounding nav boxes.

This is the template:

https://en.wikipedia.org/wiki/Template:Subject_bar

On the Obama article the wiki text appears to be...

{{Subject bar
| commons = y
| n = y
| n-search = Category:Barack Obama
| d = y
| d-search = Q76
| q = y
| s = y
| s-search = Author:Barack Obama
}}

Looks like the html it outputs doesn't have anything which would let us identify and hide this Subject bar template output specifically 🤔

Though I suppose every Subject bar would have similarly messed up layout... will poke around to see how common they are...

Put in blocked pending hearing back about @JMinor's raising this with mobile web team. See these comments above:
https://phabricator.wikimedia.org/T233128#5508254
https://phabricator.wikimedia.org/T233128#5508288

This is an issue with the template - I can replicate it on Minerva desktop: https://en.wikipedia.org/wiki/Barack%20Obama?useskin=minerva

https://www.mediawiki.org/wiki/Reading/Web/Working_with_editors_to_get_templates_fixed has some notes on the process parts of how to fix this problem (but this is explicitly not a responsibility of the reading web team).

@Jdlrobson nice to know about this procedure to get templates fixed by the community! It's not odd to have templates that work on the web but don't in Page Content Service.

I wonder if we can make an effort to improve it with a workflow and/or RACI matrix between the stakeholders, e. g. Product Infrastructure, Apps, and Web, to get these fixes requests to reach the editor community.

cc/ @LGoto and @MattCleinman

A formal procedure here would be nice as it's something we commonly run into, but to work would likely need community ambassadors, cc @sgrabarczuk

I rewrote this template. Not yet deployed, but https://en.wikipedia.org/wiki/Template_talk:Subject_bar#Better_responsiveness

Pending someone reverting me, I've made TheDJ's version live, so this should be resolved Soon?