Random Products Added To Random Recurring Orders Since Ubercart Upgrade 7.x-3.3

I know this sounds extremely vague and this one particular client may have a unique setup but here goes.

Since upgrading to Ubercart 7.x-3.3 there have been 4 random recurring orders that have had published or unpublished products added to their order. This is a production site and using Authorize.net and Paypal (as part of Ubercart). All 4 (thus far) have been credit cards so it seems to be isolated to Authorize.net but this could be a coincidence. Out of the 4 orders every product added is a different one, so not one of the 4 orders adds the same product. The cron is running every hour and the orders are not consecutive. The 1st one occurred yesterday and the next one 30 orders later then 2 others much closer together.

I have not been able to identify a common thread as to why this may have occurred other than the issue happening after the upgrade of Ubercart 7.x-3.3. Other modules that were upgraded at the same time were:

• uc_termsofservice
• ubercart
• views_bulk_operations
• ckeditor
• simpleads
• metatag
• field_validation
• securepages
• feeds_tamper
• entity
• custom_breadcrumbs
• entityreference
• constant_contact

Any tips, suggestions or advice would be greatly appreciated as this is affecting orders in a live production site.