In case when a Shared Tab has transactions tagged with variety of categories (e.g. shopping £50, groceries £30), once shared amount has been settled, the app subtracts only from one category (e.g. shopping -£40). It should instead subtract from all of them (e.g. shopping -£25, groceries -£15).
This way the categories spending summary would be accurate.
You are doing a great job btw!