Since few weeks copying and pasting table cell (Ctrl+C; Ctrl+V) in VE has been broken.
On paste it inserts new table with duplicated cells in target cell.
(See animated sequence; using ScreenToGif, if someone need it)
Using recent Chrome. Same issue on enwiki and lvwiki.
I am surprised it has not been noticed and could not find issue in phabricator. I think it is a different issue from T214624.