plase see the issues: https://github.com/ProseMirror/prosemirror-tables/issues/43
clone the code https://github.com/geeknull/prosemirror-tables run the demo
you can see the error in above gif.
what i do?
My commit https://github.com/geeknull/prosemirror-tables/commit/358ffe19d244735cb324c7c39e94fe22c9db8a46
update prosemirror-view to 1.0.10
make some list in table and copy these to other cell
I guess the commit https://github.com/ProseMirror/prosemirror-view/commit/18ad6ad715956a92f56e49fc7976595776ab7c6c bring this mistake.