Created attachment 64707 [details]
Screen shot

Problem description: 

Steps to reproduce:
[1] Open new text document.
[2] Choose a "nice" colour for the background of fields (Tools > Options > LibreOffice > Appearance > Custom Colors > Field shadings)
[3] Display nonprinting Characters.
[4] Type in a heading.
[5] Insert a Table of Contents: Insert > Indexes and Tables > Indexes andTables... > Tab Index/Table > OK.
A table of contents is inserted: 
1. Line: "Table of Contents", the background colour is grey. OK.
2. Line: Name of Heading (background colour is grey, OK), dotted line up to the page number (background ground colour is displayed in the colour of fields, BUG!!), page number (background colour is grey, OK)
Also see screen shot.
[6] Switch off the view of nonprinting characters. Now the background colour of the dotted line is also grey, OK.
Also see screen shot.

Expected behaviour: 
Dotted line is not a field, hence the background of the dotted line should never be displayed in the background colour of fields. 

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