Steps to reproduce:

1. Begin with an existing wikitext table (e.g., 4 rows, 4 columns). Open the page in VisualEditor.

2. Copy part of a different table or spreadsheet (e.g., 2 rows, 4 columns).

3. Place cursor inside a cell of the table in VisualEditor.

4. Paste the copied table.

Results:

VisualEditor places the entire new/rich-copied table, including wikitext formatting, inside the first cell. The wikitext parser does not deal very gracefully with table-within-table formatting.

Desired outcome:

VisualEditor should overwrite the contents of the cells with the new material.

Version: unspecified
Severity: enhancement
URL: https://en.wikipedia.org/w/index.php?diff=588462959&oldid=588405367#Create_and_copy_table.