We currently use an Drupal 7 with Ubercart.
The project concerns the module:
UC Recurring Payments and Subscriptions version 7.x-2.x-dev.
It has the following fix applied:
[url removed, login to view]
The recurring part seems to be working, but the cancel feature turns up an empty page with the titel "Cancel".
This should be a simple bug fix project (and therefor won't cost much time).
If this project is handled correctly there will be more frequent work in the future.