A django based system that provides a stable URL for every item in the library's catalog. Various discovery services will link to these URLs. The page for each item will in turn link out to various other resources that provide methods for accessing the content of the items.
I noticed some odd behavior on a FindIt item view page (https://findit.library.gwu.edu/item/2365143), tested in Chrome v62.0.x and Firefox v56.0. I haven't confirmed the behavior on other similar pages.
On the page, there are three different holdings records with a Inline image 2 button for each. No matter which of the three Show buttons I click, only the first holdings record drops down. So, the wrong section drops down two out of three times.
It was hard to notice at first that the wrong section was dropping down, so people may not always be noticing that they're looking at different content than they requested.
As reported by @reliztrent: