Acts 28:16-31 contains a wonderfully vivid description of Paul's arrival in Rome, his meeting with local Jewish leaders and his subsequent debate with them.
The debate is preceded by a declaration of the leaders that they have heard no gossip or report regarding Paul, would like to hear his views, but know nothing about the Christian sect other than that no one has a good word to say about it - a remarkably candid full disclosure.
Following Paul's closing words in the debate, some editions have verse 29 (Cambridge NEB):
After he had spoken, the Jews went away, arguing vigorously among themselves.
The Cambridge NEB includes this verse in a "Some witnesses add" footnote. The verse is missing from the English Revised Version, and Weymouth New Testament, and the verse is bracketed in the New American Standard 1977 and Darby Bible Translation. The other common translations include the verse.
In which witnesses does this verse appear and why is there disagreement about it?