Comment 79 for bug 857651

Since so many components are involved a fix/change might have been missed.
And since I recently didn't hear anything about this otherwise rather hot bug I was giving focal a try.

It turns out that this was indeed improved. Only the user of pkg:ifmail user fdt name "Fidonet" is still visible. All other formerly affected packages are good in Focal.
I can't (without digging through history a lot) say what fixed that but I'll update the bug tasks accordingly. Setting Focal fixed and marking Bionic/Xenial as still affected releases.
The backport tasks for those packages are incomplete thou as it is unclear which change in which package fixed it for Focal.

Note: This is only speaking for the "default config" of Ubuntu Desktop as in 20.04 we know that certain environments will behave differently (e.g. KDE never was affected).