Can't seem to copy and paste with K74 beta4. I highlight text, right click and select copy. But when I right click to paste into search bar it doesn't even give me the option to paste.

If when you highlight text, the color is grey you must first move the cursor to the URL bar and click once. If you do that then when you highlight text the color should be blue. You can copy and paste.

I think it is a known bug and is being worked on by developers.

Bill,
Easiest way is to right-click on any link on the page.
Content becomes copyable.

I think that something wrong with OnActivateWindow event (described by James)

ok....I just noticed something. I can right click and copy and paste from original open tab but not from second open tab. No matter what I try I can not get the text to highlight properly in the second tab so will not cut and paste. Works fine in original tab though ( even if I go and open second page in original tab ).

You don't need right-click to copy from context menu.

Right-click (on any linked content or simply link) is needed only to get focus back on page. Try this.
I have it working now.