Missing image groups from collections
When browsing an image collection in the catalog, https://www.familysearch.org/search/catalog/2000286?availability=Family%20History%20Library, I see that several image groups have no icon whatsoever. They are indeed not viewable online or at a Family History Center – only returning the message "This image is unavailable for online viewing at this time" – and some of them are old enough (>150 years) such that I doubt privacy laws would still be in effect. I don't see any indications of how, when, or where these images may be accessed; this has been the case for over six months.
Is this due to a bug (several other questions report similar access issues for technical reasons)? Otherwise, is there another means by which I could view these images or have someone search them on my behalf?