I just assumed that they've introduced a bug into the game with regards to the inventory window position not being saved as well as where it is now opening.
At least I hope it's just a bug that they'll fix in the next update as what it does now makes no sense to purposely add to the game as far as I'm concerned.
I can see them forcing the inventory window to open in the position where it overlaps the character icons, maybe it was necessary for people with smaller screens but it should definitely remember it's last position where the player moved it to.
I was just getting used to opening two or more inventory windows at the same time to shift around loot, but after only about an hour or two of playing where the window position is no longer remembered, I've already grown frustrated with playing the game since with the way that the game works, I'm constantly having to move loot from one character to the next before doing any trading and it's just gotten downright annoying to me to have to continually slide around the inventory screens because the position is no longer saved upon closing them.
Please fix.