I'm sorry, no. Middle mouse paste, and having in effect two separate clipboards, is the expected behavior. It's not an "easter egg"; ignoring it does not make you "regular" any more so than using it on purpose make you an "expert"; on both accounts, that literally doesn't even mean anything.
This is a little known feature and behavior that leads into user confusion
when they click the middle mouse button without knowing about its
functionality. Most of the time, its also clicked by accident, and its
very weird o have the clipboard dumped on such occasions.The feature is also not discoverable at all, and even on the Freedesktop
wiki page, the entirity of the "PRIMARY" selection is refferred to as
an "easter egg".The correct behavior can be summarized as follows: CLIPBOARD works
just like the clipboard on Mac or Windows; it only changes on explicit
cut/copy. PRIMARY is an "easter egg" for expert users, regular users
can just ignore it; it's normally pastable only via middle-mouse-click.https://www.freedesktop.org/wiki/Specifications/ClipboardsWiki/
