If you just have a single row of 5 chests which has been placed on the floor, everything works as expected - maybe that is the setup you might have tried, Misk?
Yes, this is how I was trying to reproduce the issue in my own house. And as you stated it was working as intended.
Great screenshots to show the issue.
I agree, the screenshots helped a ton and pointed out that the issue appears to only occur with stacked containers.
I am submitting a problem report into the system on the discrepancy between the classic client and the EC.
Thanks for pointing me in the right direction.
