Speaking to the coders, the right click menu is not designed to work with the checkboxes and will not be updated to do so. Sorry. You'll need to use the dropdown menu with the checkboxes to move multiple items at once.
Hey Grim, I just tested it and it's not working. I selected 3 potions, right clicked to send to a folder, and only one of the 3 went.
Huh. Right enough. I forgot about the right-click option, I confess. I used the drop down menu of chests under the backpack. I will update the guys on this, thanks!
I was inquiring about when you highlight more than 1 item in your backpack and try to send to a specific folder, only one of the highlighted items get sent, not all.
That's what I was talking about. Dunno why I said chest but it works correctly, having tested it on Chrome and Firefox.