Wikimedia Bugzilla is closed!

In wikitext editor, you can separate cells with a double bar "||" on the same line :

|Cell 1 || Cell 2 || Cell 3

(same thing for headers, except two exclamation marks "!!" are used).

When adding a new cell with VE, the result will look like
|Cell 1 || Cell 2 || Cell 3
|Cell 4

rather than |Cell 1 || Cell 2 || Cell 3 || Cell 4 .

While this still works, it makes the table less understandable and usable for those who do not use VE.