Context Menu: copy left and copy right

[PlutoPlanet]

Hello World,

In older versions it was possible to mark a line on the left and copy it to the right, or to mark a line on the right and copy it to the left. This was perfect and very safe, because it was almost not possible to do the wrong thing.

Newer versions (at least 2.16...) allows you to click on the left and copy in both directions. This is a horribly bad idea!! With this new feature I accidently started to mess up my code and it took me days to figure out why that happened.

Is there a way to deactivate this feature?

best regards,
Herwig