I've received feedback from our second-tier support. Unfortunately, we've managed to find a workaround, but it only applies to repeaters that are one level deep. We've escalated this to our developers for further investigation and feedback.
Any news of when this will be fixed? Our site is built using groups and repeater fields, none of which are being copied across to the translated pages...
I've reviewed the report, and it appears that our developers are still examining this issue along with other bugs. However, it seems that the fix will be included in the next update.