Downgrading is a bit drastic and I don't recommend it for several reasons. Most important one being CVEs
Since the default action of click outside was essentially the same as clicking done, you could use the predefined/default shortcut CTRL-ENTER
Alternatively, you could apply a shortcut key such as ESC. or ALT-C to the edit cancel action. In fact, by default, the shortcut is set to CTRL-ESC (so long as you are not using Windows because that just opens the start menu and cannot be overridden by a browser)
The problem I am finding most often is that Ctrl-Enter (which I have always used in the past) doesn’t work when the editor window doesn’t have focus.
For me, this happens way more than I ever realised, for example when I’m multitasking and click into a different browser window or application, then come back to Node RED editor. (Perhaps it has happened after clicking out of the editor window first, but as a constantly-distracted person I tend to click around screens a lot without being fully conscious of this!) It’s then an additional mouse click to then have to do a keyboard shortcut.
Is there a keyboard shortcut to being editor window into focus, so it may then be closed with a keyboard shortcut?