Graphics are usually on a line of their own with their own style tag applied. You can confirm that this is true by clicking the Show/Hide button to see hidden codes. See Hidden Word Codes for more information.
The diagnosis: Look for a hard return (a paragraph icon like the button above) after the graphic. Click after the graphic and check to see if a Heading style was selected for the graphic.
If you don't see the hard return icon:
- It might be that there's just a space after the graphic. Click after the graphic and press the Enter key.
- It might be that the graphic is on a line with a line break (Shift + Enter). Click after the graphic and press the Enter key.
The cure: Apply a non-heading style to the graphic and update your table of contents.
See Electronic Table of Contents and Styles for more information.