Hey Brent,
thanks for your reply.
Filed the bug report (“Overlapping Containers - Masking Bug”)
CaseID: 45604
Unfortunetly I forgot to reference this post in the report 
Hope it will be fixed soon, so I can release my new library.
Best regards,
Torben
Thanks for your feedback. It appears you bumped in edge case of optimization under the hood of Corona. This should be fixed soon.
That’s great to hear 
I just couldn’t imagine, that nobody else encountered this problem before.
Thanks for the fast feedback.
Bug is fixed in 2016.2863. As severe as it seems, problem is really rare and would manifest itself only in simplest cases. It’s not like all containers had this issue. Only very specific, simple containers, rendered exactly one after another and having same objects inside.
Anyway. Thank you for your feedback, bug is fixed now.
Oh wow, that’s really specific O.o
Thansk alot for the quick fix!
Seems like the bug fix led to another problem:
Looking into it. Thanks for reporting the issue.
This should be fixed in the next daily build! Thanks Vlad!
Thanks guys!