How to reproduce:

1. go to some page where are links on the page and open it in VE mode
2. highlight some part of or the whole paragraph including a link or links.
3. click outside of the highlighted text (so it goes unhighlighted)
4. click some link that was inside of that highlighted text

And after this you should see that one click is not enough to open the link editor.
I tried with Microsoft Edge also, and it worked there.

Originally reported on fiwiki by user ComradeUranium.

The problem also exists sometimes without highlighting any text. For example when I opened https://fi.wikipedia.org/w/index.php?title=Nathan_Lieuwen&veaction=edit I had to click a random link on the article over 10 times before than the link editor opened.