The workaround works for me, I just did it again today. What does it show when you try to perform the workaround?
Given that it works in the incognito mode for me, it suggests that at least it is not a deliberate action by RG. Perhaps it is something related to chrome.
In Mozilla Firefox I did just now and it works perfectly. I work over GNU/linux, Firefox 60.0 with "browser.privatebrowsing.autostart" configuration option always as "TRUE", and the most recent version of Mendeley one-click web importer.