First it was this:
https://forums.snapshotgames.com/t/items-disappear-in-personell-screen-reproduceable-savegame
Then it was this:
https://forums.snapshotgames.com/t/missing-inventory-since-last-patch
https://forums.snapshotgames.com/t/missing-items-since-miskatonic-patch
And now this what I reported.
Looks that something is very wrong in that part of the code if bug keeps resurfacing.
Ads to my conviction that devs were rushed.