This report is an attempt to clarify a possible misunderstandingregarding my report #9055. The problem I was trying to describe is not the backpack-stacking issue.
I was wondering why one can put an EMPTY container into an other container and fill it up with stuff AFTERWARDS.

Means: You can still build an "two level stack" of filled containers if you do it inside your inventory.

Please watch the video attached to the original post.

(Don't want to be over-particular but I think this is still an issue - sorry)