The patch was merged into the LTS branch upstream yesterday: https://cgit.kde.org/plasma-workspace.git/commit/?h=Plasma/5.8&id=e43b89e2b9f3ff9bf6299488e82a365cbfde2b2a
As I mentioned in the upstream report, it's been working nicely for me on Sid against Plasma 5.8.4, for the past few days.
