I'm curious about the correct way to cite a paper which is flawed when I publish in academic journals. In the past I've added annotations to the bibliography (or included text in the main article) stating what the problem was. But now I wonder if instead if such annotations should sometimes start with "The authors have been notified that...."
The reason is that I have encountered a professor who shamelessly fails to issue errata for mathematical errors and (worse) also fails to issue errata when overlooked prior work (not mine) completely scoops her weaker results by 25+ years. (The weaker result has eclipsed the older one, drawing on the order of 100 citations.) More recently, I found that she has another article failing to cite a similar article proving a similar result, and she failed to issue errata for mathematical errors in 3 of her papers.
Her lack of citation case wasted a month of my time. (I wrote an article improving upon her paper, only to find my manuscript was still weaker than the original she failed to cite.)