Describe the bug
I have offered all of one asset I own in a credit offer.

When I try to edit the credit offer, I'm unable to click submit because I have 0 of the asset I wish to lend (as it's all in this credit offer I'm trying to edit).

I am thus unable to edit a credit offer in the web wallet.

To Reproduce
Create a credit offer, offer all of an asset in your balance (1 of 1 for example) for loan.

Go to your created credit offer in your portfolio, click the edit button.

Try to make any changes, you cannot.

The available balance is highlighted red, indicating it's failing the form validation, despite not wanting to change the offered asset quantity but rather the expiration date.

Expected behavior
I can edit a credit offer I have created.

Screenshots

Desktop (please complete the following information):
web wallet, firefox

Additional context
To edit the credit offer I have to delete it and create it from scratch.