Disk usage discrepancy?

What would that mean in cases of bloating temp folders that don’t get cleaned up: Large temporary folder - #28 by jammerdan
I think I’d rather have these zombie files on disk than in RAM.

Are you sure there is such process? There is a huge old thread about the temp folder that gets bloated.
I have experienced it myself: Large temporary folder - #28 by jammerdan
And I have just checked on a random node of mine and I see partial files that are from November in the temp folder and they don’t get cleaned up even after full restart of the node container. So AFAIK there is no process at all that takes care of those remaining files and the temp folder still has to be cleaned by hand.