Steps to replicate the issue (include links if applicable):
In a wiki that has the Translate extension installed, create a page with the following wikitext
<table> <tr> <td><translate>some stuff</td> </tr> <div></translate></div> <tr><td>hello</td></tr> </table>
Open the page with VisualEditor.
What happens?:
The meta tag corresponding to </translate> moves before the one corresponding to the <translate> tag (because its parent div is fostered) and the annotation range is not valid.
This may have an impact on larger pages with multiple <translate> ranges, because there's assumptions that this does not happen.
What should have happened instead?:
The meta tag corresponding to </translate> should be moved to after the table; the annotation range should be extended to the whole table and the table should be marked as uneditable in VisualEditor to prevent round-trip issues leading to bad markup/corruption.
Note
This is an annotation issue, it doesn't have much to do with Translate - but since Translate is the only extension providing annotations, that's the one we use to reproduce the issue.