Invisible anchor tag flag displays twice

Problem/Motivation

When inserting an invisible anchor tag into the CK Editor the flag shows twice after save and edit.

Steps to reproduce

1. Create a new basic page.
2. Add a component using the CK Editor and switch to Full HTML Text format
3. Enter a few paragraphs of dummy text.
4. Place the cursor in a different position in the dummy text with no text (before or after a paragraph)
5. Click the Anchor flag icon and add an anchor.
6. Verify the anchor indicator appears (Invisible anchor).
7. Save the page.
8. View the page again in the Edit Mode. 2 Flags come up in front of the [INVISIBLE ANCHOR] tag.