(In reply to comment #0)

Groups of consecutive images are alienated under certain circumstances.

It might have something to do with the wikilinks in the image caption,
however
I really just have to throw you some testcases:

---

(1) Works fine:
http://en.wikipedia.org/w/index.php?title=User:This,_that_and_the_other/
sandbox/VE2&oldid=561493135&veaction=edit

(2) Similar, but doesn't work:
http://en.wikipedia.org/w/index.php?title=User:This,_that_and_the_other/
sandbox/VE2&oldid=561493351&veaction=edit

(3) All three groups uneditable, even the group that is identical to (1)
above:
http://en.wikipedia.org/w/index.php?title=User:This,_that_and_the_other/
sandbox/VE2&oldid=561493252&veaction=edit

(4) One group fine, the other alienated:
http://en.wikipedia.org/w/index.php?title=User:This,_that_and_the_other/
sandbox/VE2&oldid=561493194&veaction=edit

These now all work for me - we've updated Parsoid (and purged the cached versions to avoid corruption from old things), which is (I think) the cause of these issues. Do they work for you too?

Could you check [[History of Delta Air Lines#1960s_and_1970s]]?

(In reply to comment #1)

Do they work for you too?

Sorry, yes the testcases do all work now.

(In reply to comment #3)

(In reply to comment #1)

Do they work for you too?

Sorry, yes the testcases do all work now.

Yay. Marking as fixed. :-)

See bug 51039.