This behaviour has always been the case and is a design feature of X11.
You are describing SELECTION and PRIMARY buffers. They were separate
and have semantics that are both supported by major X applications. It
is unlikely that this will change in the near future, even though more and
more applications prefer exposing the PRIMARY buffer in their menu
systems.
Thank you for your report.
This behaviour has always been the case and is a design feature of X11.
You are describing SELECTION and PRIMARY buffers. They were separate
and have semantics that are both supported by major X applications. It
is unlikely that this will change in the near future, even though more and
more applications prefer exposing the PRIMARY buffer in their menu
systems.