Something funny happens when I use F9 to update a table of contents: a rogue tab pops up at 1.14" on TOC2 - but only in the second half of the table. Even then, it only visually affects one TOC2 heading and what it does is remove the tab leader and the right alignment of the page number for that one heading.

I can correct it by amending the tab setting in the TOC2 style, but every time I use F9 the error recurs.

Any suggestions?