The question What is the correct form in this case? was (quite correctly, imho) closed recently. I posted a comment asking the OP to edit in further details, with a view to having the closure reviewed.
But user Community has locked the post, so the OP can't revise his question.
Is this a bug? I can't see how it could be a "feature".
EDIT: Older and wiser, I've deleted the "bug" tag from this question. It's a sensible design feature.
Yes, as ColleenV suggests, this is an intentional "feature" to make sure only one copy of a question is editable at a time.
That said, I highly doubt the question will ever be reopened on EL&U, so I'm going to go ahead and unlock the ELL version as you've requested. But just to be safe, I'll send the EL&U mods a ping to let them know what's going on, so we don't end up with two copies of the question in play.
I believe it is because it was a rejected migration. If the question had originated on ELL, it would not have been locked when it was closed. It's a feature to prevent forking a question that's being passed between sites. It should be editable on ELU:
