I try to copy the URL of my current tab, and open a new tab, and try to paste, frequently it will not work, and it pastes in a previous copied text. Random, doesn’t happen all the time, but is frustrating for sure. I tried CTRL+C and right click copy, both produce same results.
Do you have the “tab preview” feature currently enabled? I’ve heard that that feature can, in the current release, sometimes interfere with copy-paste functionality. See here: Copy and Paste not working
That feature was indeed turned on; I have since disabled it and will resume normal browser use to see if the error is resolved.