Oops, didn't do enough homework or the wrong homework. The middle button/scrollwheel doesn't click. Scroll down and up still work. Solution: new mouse, use 3 button emulation, or switch mice with my wife who hates the scrollwheel and has it disabled on her computer.

Jeffrey 

On Fri, Feb 24, 2023, 7:10 PM Jeffrey Taylor <jeff.taylor@ieee.org> wrote:

I think this happened when I updated from Leapt 15.4 to 15.5. I used to be able to click and hold the left button to copy text and press middle button (scroll wheel) to paste.  This is on XFCE. I find plenty of pages telling how to disable this and the middle button emulation on 2 button mice but not how to enable on a 3 button mouse.

TIA,
   Jeffrey