Working on a trade today, when I tried to change quantities of some cards, the quantities of others changed too.

Example: Trade containing Revenge of the Hunted, Sublime Archangel, and Cathars' Crusade. Each came into the list at quantity one. When I changed Revenge of the Hunted to quantity four, Sublime Archangel (the adjacent card in the list) also changed to four.

Similarly, when I started trimming cards from a trade, entering a zero amount for one card would also zero (and thus remove) another adjacent card (always the card below the one being modified).

It happens less often if I tab out after changing a quantity. Clicking out of the box increases the appearance of the problem.

I'm using Deckbox in Firefox 10.0.6, under Windows 7 (x64) with 4 Gb RAM.

I have this issue as well on my laptop and desktop, linux and windows. Seems to be more of a problem when I'm on a slower connection.