I noticed this yesterday too. It’s inconsistent. The same taxon page shows the whale shark sometimes and not others. Here’s an example that has been doing it for me (but only sometimes I load the page): https://www.inaturalist.org/taxa/384897-Aceria-genistae The ones I’ve noted it on so far don’t have Wikipedia pages.
It does seem to involve the Wikipedia panel with the code for making a new Wikipedia page. Sometimes when I refresh the taxon page I see this panel of Wikipedia code, sometimes there’s no panel with code, and occasionally there’s the whale shark.
I have seen this several times in the past few weeks, and every time refreshing the page, or navigating to a different tab (like the map tab) makes it go away
I’ve been seeing this every now and then on Edge as well.
Edit: switching to the taxonomy tab will also mess up the formatting there for a few seconds before it corrects, then switching back to the about tab makes it work.
For me, it happens if you come from the title with species name of an observation e.g. https://www.inaturalist.org/taxa/737811 and only the default species page exists. If you refresh the page with the error, it displays ok.
This was a bug we had some reports about (they were mostly coming from people who weren’t logged in, although not always) and we released a fix on October 25th, so maybe the fix didn’t correct for all situations. I haven’t been able to replicate on my end, though.
I believe this is a separate issue and more because we can’t show more than 10k results.