If I do that in a Chrome-based browser, the text looks like it's selected, but it isn't. Same if I just mark the text using the left button. It won't paste when I click the middle button. I have to click again, then double click, and then it'll paste - most of the time.

Elsewhere I either double-click on a word, which will select that word for pasting, or I mark a section with the left button (press and hold at the beginning of the selection, move and release). And the middle button will paste. And paste again, if I wish.

But URLs in Chrome-based browsers instead behave in the annoying way described above. In the past it worked as expected.