Incorrect breadcrumb when multilingual node appears in menu more than once

I have a multilingual site with the content selection mode set to 'Current language and language neutral', I use the primary-links menu for all menu items. This means that if a page has x number of translations, it must appear in the menu x number of times - once for each translation.

The following should highlight my problem:

So. Item 2 is specific to each version of the site, whist one of its children (Item 3) is not. In this case, item 3 must appear in the menu twice - both times pointing to the same node (I may be wrong here, but I can't see any other way to get Item 3 into the menu hierarchy). Now, visiting Node 3 on each version of the site produces an incomplete breadcrumb of:

Home > Item 1

but it should be:

Home > Item 1 > Item 2(.1 or .2 depending on the current site version)