I've been using Confluence and the Table of Contents macros for 2 years, and in the last 2 days I've found that several of my existing pages (with previously functional TOCs) are now showing a blank space in the Table of Contents region.
Has something changed in the last 2 days on the Confluence side?
I have so far been able to get the TOCs to reappear in each case, by: editing the page, editing the TOC macro, and then re-publishing the page, but this is not an acceptable workaround.