Here's an issue with the said "Downloadload PDF" button: https://cacm.acm.org/issue/august-2023/. But, when I click it, it doesn't download anything. But opens a page of topic hierarchy (?).
For some reason the download PDF option doesn't work reliably. Two ways to get to the actual PDF if it takes you to the wrong page:
Slow way: Click archive, navigate to the issue, select PDF.
Faster way: On the right hand side (desktop) there's a vertical bar with some buttons click the circled i, then "Issue's Table of Contents". Takes you to the issue's page and you can get the PDf.
