March 10 2020
This bug is still open. There is no current estimate from Microsoft on a fix.
January 29 2020
Bug notification - medium impact - status, open
Our development team have reported an issue which has arisen as a result of a Microsoft back-end code change.
Specifically, the way navigation requests in the menu bar are processed has changed and links in the side bar will require 2 clicks with your mouse to activate.
This code change is not universal as it is rolling-out progressively across SharePoint tenancies worldwide.
It has been logged as a bug with the SharePoint product team by Atvero (as well as many other Azure developers) and we will keep this page updated as feedback is received.