All the examples I've found are of pages that require login, or in my intranet at work, but this should be repreducible with any page that embeds the pdf preview as an iframe. I'll keep looking for an example in the wild, but I'll try to explain again what's happening below.
Here's part of the HTML of the page responsible for embedding the pdf
<div class="c-article-section__content" id="preview-content">
<iframe src="/content/pdf/10.1007/BF01806105.pdf?pdf=preview" class="app-pdf-preview__frame" title="Article PDF" style="height: 100%; width: 100%; border: 0px;"></iframe>
</div>
The style="height: 100%; width: 100%; border: 0px;"
only gets injected in the iframe
in Orion which seems to be the source of the problem
For comparison , here's how it's rendered in Firefox
<div class="c-article-section__content" id="preview-content">
<iframe src="/content/pdf/10.1007/BF01806105.pdf?pdf=preview" class="app-pdf-preview__frame" title="Article PDF"></iframe>
</div>
I've found this issue in the forum, which is now fixed, but if I remove the injected CSS I can reproduce it, which leads me to suspect that the fix lead to this regression.
Anyway, I'll keep an eye out for examples in the wild so that you can see it in your end, but if you have access to Springer, accessing the link posted and scrolling to the "Article PDF" section of the page should show you a PDF iframe which is cut off , i.e. its height is very small and the contents are mostly hidden.