Steps to Reproduce:

This issue only happens in Internet Explorer 8 and 9, and it can be reproduced in Confluence 5.x.

1. Edit a page in Confluence.
2. Create a table with two or more rows
3. Create an unordered list inside row 1.
4. Remove row 2 from your table (Not row 1 which contains the unordered list).

Expected Results:

If a row is deleted from a table, user should still be able to edit the table as he/she wishes.

Actual Results:

When a row is deleted from a table, user is not able to edit the table anymore.

Findings:

This issue only occurs in 5.x using Internet Explorer 8 and 9. I tested this on Confluence 4.3.7 and it works just fine with no issue.

Workaround:

Press preview button, and then press Edit to come back to the edit mode. You can the edit the table again.