It's quite simple Cor, LibreOffice doesn't know how to optimize things when it comes to aligning page numbers. See this screenshot.
TOC issue in LibreOffice 4.4.1.1 -s4.png (image/png), 83.35 KB, created by Daniel Grigoras on 2015-02-24 17:51:28 UTC
(hide)
 
Creator: Daniel Grigoras
Created: 2015-02-24 17:51:28 UTC
Size: 83.35 KB
Actions: View
Attachments on bug 87523: 111072 | 111127 | 111167 | 113619 | 113621 | 113622 | 113623 | 113652