Hold a transaction, budget, repeating bill or split purchase plan to see what you can do with it: Edit, Delete and more (Record or Pause for a repeat, Stop future installments for a plan).
Swipe a transaction or a repeat left to delete it. A deleted transaction has Undo; a repeat asks first.
Where the page itself swipes sideways (Swipe to change period, on Transactions and Budgets), swiping a row doesn't delete, so the two never clash: hold the row instead.