Whenever I get disconnected by the game, and that's way to often, the game appears not to be saving data. It rerolls the stash to the previous saved instance, and completely wipes skins and dyes.
This is not a "no data" bug that can be fixed by relogging. The stash is literally rolled back, and relogging does not fix the stash, skins dyes, nothing. It's as if the game only saves data when logging off through the menu buttons, that would be ridiculously stupid if it were the case.