LibreELEC (community): nightly-20190902-223b7b0 (RPi2.arm), "date added" for import seems incorrect?

I 'faked' a new movie that's never been in my library before, for testing (Once Upon a Time in Hollywood) by renaming another file.

The movie imported in, today, 04/Sept/2019.

The "Date added" on my database, is apparently "20/July/2019"

Is this a bug in LibreElec? In Kodi? In the OS underneath?

Can someone please try and re-create this with a test Pi?

Ok in the interest of being a bit more thorough with my testing.

I have installed LibreElec OVA virtual machine, totally diff computer (x86)

Date and time IS correct.

Brand new install!

Import of Once Upon Hollywood, this time? 19/July/2019?

So I'm confused, shouldn't the "date added" be the date added to my LIBRARY?

EDIT:

Ok it appears the 'date added' library flag is based on the date the file was actually written to disk (total madness, but so be it)