I saw the video below that shows the possibility of a shift in Channel Balances. It shows that the amount that one uses to fund a channel may "disappear" if the channel is used as part of a route to fulfill the payment for someone else.
Someone Else --> Me --> Store
It this scenario:
- -> I get ready to go to the store
- -> I establish a payment channel between myself and the store and add $100 USD to it
- -> Someone else uses my channel (i.e. me) as part of their payment routing - a go-between - to pay the same store (since they don't have a direct channel to the store).
- -> My direct channel to the store is now empty of funds.
How does one come about this problem?