Right now, when you open link inspector and keep the link target field empty, you will still be able to click on "Open" button as it remains active, though it serves no purpose.We should disable it in this case
The "Open" button is now getting disabled when you clear the link target name , but if you just open the link inspector in any empty line and there is no link target name specified yet , the "Open" button still remains enabled
Again in production, the "open" button remains enabled when I open a link inspector in a blank line without selecting a text.I will wait for a while to see whether it gets started working automatically like it did in Betalabs.Reopening it for now.
So the first patch set I made (to deal with existing links when you clear the target page) should be deployed to all Wikimedia wikis. But the second one (per Rummana's comment 4) was merged a day later which just happened to put it on the next deployment version (so it should be another week).