You need to get the sources of plasma-desktop, apply the patch (patch -p1 < path/to/patch.diff) and rebuild at least kcms/kfontinst.
If you've no experience with compilation, you can ask your distro to pre-pick the patch (ask implies the answer may be "no")
There's no schedule on when this patch hits downstream, sorry. It's not even applied upstream yet.
You need to get the sources of plasma-desktop, apply the patch (patch -p1 < path/to/patch.diff) and rebuild at least kcms/kfontinst.
If you've no experience with compilation, you can ask your distro to pre-pick the patch (ask implies the answer may be "no")
There's no schedule on when this patch hits downstream, sorry. It's not even applied upstream yet.