This is an old topic:

e.g.: https://forum.kde.org/viewtopic.php?f=289&t=151131

Any ideia when it will be fixed?

When I look at /media/<user>/, there is a lot of old paths are not removed.
It seems that when a path with the volume label already exists, a new one is created with a increased number in end part of the name.

So, shouldn't be a cleaning process in the start of plasma?

This is annoying specially when dealing with fixed paths.

-rsd

Talk to your distro, this has nothing to do with Plasma or KDE, it's the underlying Linux system.

FWIW: if you do ask a question, please specify your exact Plasma version and distro version.