Transactions that are sent through from you bank or financial institution can sometimes show as Pending. When this happens the transaction details aren’t included with the amount, so categorisation isn’t possible.
When an income amount is set as pending, that amount will show as uncategorised and be offset against your spending amount so far this month.
If your spending reports ever look like they are too low or show as negative, check your Uncategorised transactions for income amounts that show as pending.
At this stage, these transactions can’t be categorised. The only way to hide them is to exclude them from your budget by hiding the transaction. This will exclude the income amount until you go back to the transaction and show the transaction again.