FYI, I think the config copying from a previous version when 4.2 is installed is broken. There is the previous thread on pad enter, and today I noticed that shift-cursor up/down was selecting characters whereas I've always had it set to line. Checking the config I see it's set to 'always chars' whereas in 4.1 (from where this config was copied) it is 'line or chars'.
Now, I find my editor windows wrong too. Instead of one file per window is adding another file tab every time I select another file. This is doubly annoying because I've had it like this for so many years I have no idea where the setting is to put it back! I've searched for 'window' but nothing seems relevant.
And, presuming I spend another half hour finding the option that sorts this out, at the back of my mind I am thinking what else has been changed that I never change and will annoy me whilst wasting my time putting right.
Can I export my config from 4.1 and import to 4.2 and have it just work, or is there something that needs converting?
Edit: 'Filles per window'. Found it. And it is set to 'On file per window'. So why is it allowing many? I toggled it to many and back to one, restarting SE each time, but it still allows many files per window.
Sorry, can't put up with this. Reverting to 4.1
Edit2: Duh! It's the tabs, not files per window, so 'multiple files share window' is the right setting, so it's how to stop another tab showing up. Sorry for the confusion of what option I am dealing with but, as I said, this has been working this way for so long I rarely need to venture into the options dialogs.