In multiple cache pages the HTML page is not valid, its parsing fails on error.
Next to the section with OpenStreetMap the element li closing tag is missing the greater than sign. There is OpenStreetMap</a></li</ul></span> , there should be OpenStreetMap</a></li></ul></span>
The page source code shows missing greater than sign (for myself) in Google Chrome 96 and IE11. In IE11 there are further some pictures not loaded, I suspect due to the not correct HTML page.
Examples attached are from:
https://www.geocaching.com/geocache/GC4R28P
and https://www.geocaching.com/geocache/GC90JZF_dobyti-radyn-lab-cache-bonus
and both browsers