Electronics rate for Construction Parts 2 is incorrect.

Issue description

I am in the process of transferring my infrastructure from my early game area to the more permanent/expandable late game area. I have ended up with 1 T3 assembler making Electronics 1 servicing 2 T3 assemblers making T2 Construction Parts still in the old area.
The electronics are made at a rate of 24/60.
The Construction parts consume at a rate of (12/60) x 2 machines = 24/60
The problem is that the storage bin holding these electronics is slowly, but steadily depleating. I have truck exporting turned off, so I know it's not that.

The save is attached. The electronics storage in question is currently throwing a "low supply" error which can be used to help locate the machines of interest. The Parts 2 assemblers are nearby as well.

Reproduction steps

No clue if this is repeatable or if it's something unique to my save.

Game version and build number

v0.7.4 (b441)

Operating system

Windows

Attachments

Elec-Constr2 Bugged.save

Files not imported: Elec-Constr2 Bugged.save

You imagined it. I've observed for several months that the number of electronics is kept in the range of 277-283 and doesn't decrease.

Ok, I was going off the visual on the outside of the storage, and over a period of time I watched the topmost row of items slowly disappear. In retrospect, I should have checked that actual number IN the storage.