Version 1 Table of contents problem

After a new file upload this morning, the Table of Contents for Version 1 is not displaying the correct organisation of the pages.
All the content is there, can still be searched, and the index still functions – but the TOC is displaying somewhat random stuff.
We recommend you use Version 3 until we fix the problem as we may need to temporarily remove Version 1 altogether to do so.
Please accept our apologies for any inconvenience this may cause.