My original post got marked as flamebait.
I have run into a few windows programs that try to simulate the behavior, such as Trillian or Putty, that copies on select. Putty is the worst, because I have a hard time telling if I've actually entered my password (from a password storage app). CTRL-V does not work to paste. I have no idea why Trillian does it, but Putty is being a "good" multi-environment player by being the same in each. It just is an odd-ball in the windows court.
What are the rules for "current selection"? Does it include any echo of most recently, but not now highlighted? Highlighted in a windows that is the the active window?
But the "issue" is that there is nothing that tells you that there are TWO DIFFERENT WAYS to make stuff that is at point A go to point B. I didn't know that I had a choice between not using one or the other because I did not know that they were different. I thought I highlight text and it goes into THE clipboard automagically or I can select text and hit ctrl-c and get a 50/50 chance of copying it to THE clipboard or terminating the program. I thought that middle clicking would usually paste or do nothing or pressing ctrl-v would usually paste or send ^V or some such.
Another way to say the "issue" is that established Windows users carry some baggage of how stuff should work and the extra choices in Linux can cause confusion. I'm all for extra options, but sometimes the option I want is, "stop doing some annoying thing". Where is the option to NOT copy when I highlight text? If it is in some .config file, great! How did you know which one? Why can't that .config file have a GUI in a control panel?