Let us take this scenario - Mid-sprint, Dev Team found an existing while working on a PBI item.
They discuss it with PO and he suggests (a) to let it go for the future or (b) to work on it in this sprint.
As Dev team owns quality, should they go ahead, create a task, and fix it within this sprint? Or should they listen to PO's 1st suggestion?
What if working on it takes time and will impact the Sprint Goal?