Cannot remove table from richtext field

Steps:

1. Go to Content/ Content structure.
2. Create new content which contains RichText field, e.g. Folder.
3. Add table to RTE.
4. Remove table using Trash button.
5. Publish content (do not click anywhere between removing and publication).

Actual result: Table is displayed in content preview.

Remark: Does not occur if you click somewhere between removing and publication.