Good thing though is that they all stack up so when you get back you can click it and they will all be there but combined. So at least you are not losing any atm.
That's not 100% true. The bag for the rift loot has not umlimited space and when you don't empty it, you will not be able to pick up more loot from the rifts. But as the bot isn't farming the rifts this will take a long time, so it nearly doesn't matter.