Nesting tables using Visual mode render improperly

Summary

Using the Rich Text Editor to nest a table within a cell of a parent table does not render properly within Visual mode.

Environment

Occurs with both Jira 7.6 and Jira Service Desk 3.9.6 (GSAC)

Steps to Reproduce

1. Create/edit a comment within Visual mode tab.
2. Click on the table button within the editor formatting toolbar to insert a table into the comment field.
3. Notice pre-entered text within table for header rows and cells, for example, heading 1 ,heading 2,cell A1,cell A2,cell B1,cell B2
4. Click within the cell A2 (for example), and then, once again, click on the table button within the editor formatting toolbar to insert a second table nested into the cell.
5. Click Add (or for JSD: Share with Customer or Add to issue only

Expected Results

A table is created, with a second, nested table created within one of the cells, as displayed exactly within the Visual mode WYSIWYG render (see Visual editing).

Actual Results

Notice above, instead of a nested table, the content is rendered as a single table within two header rows and a "missing" cell.

Workaround

There is currently no workaround