Once upon a time, I worked in computing where I designed large social/health databases for research purposes. In those days we tested programs thoroughly and very few bugs appeared in the live systems. In Ancestry, and a lesser extent, FindMyPast, errors are a common occurrence. Have professional standards fallen so low in computing these days and are these changes thoroughly tested before going live?
I've just dared to look at my Ancestry home page again. Here I find a strip of info about my main tree - this is the one that I selected as the preferred option for the page. I also have guest or editor rights on a few other members' trees/DNA.
Then, for some reason, my Ancestry home page shows some irrelevant 1951 US census pages. These are followed by some details - photos and other records - relating to trees that I've not looked at for a good while. They are not relevant to my tree. Then they summarise my DNA ethnicity results

It really is ridiculous.
Add - also some US School Year Books that don't seem to relate to anyone's trees