After trying to purchase once without internet, purchase cant be done until app is restarted

If there is an attempt to change the purchase (switch between subscriptions), while app is without internet we will get a response like this:
`PurchasesError(code=StoreProblemError, underlyingErrorMessage=Error finding existing purchase for SKU: something, message='There was a problem with the store.')`

All the next attempts (even if the internet is now available) will return the following response:

`PurchasesError(code=OperationAlreadyInProgressError, underlyingErrorMessage=null, message='The operation is already in progress.')``

This is happening until the app is killed and restarted.