Adding a transcluded ToC to the following multi-part work:
https://en.wikisource.org/wiki/Index:Mrs._Beeton%27s_Book_of_Household_Management_%28Part_1%29.djvu
https://en.wikisource.org/wiki/Index:Mrs_Beeton%27s_Book_of_Household_Management_%28Part_2%29.djvu
seemingly causes pages present in (Part 2) of the work to "mislink" forward and backward to the (Part 1) equivalently numbered pages instead of the correct (Part 2) pages.
Removing the Transcluded ToC can be used a "temporary" workaround, but it would be nice to know why the extension is seemingly getting confused.. ~~~~