Garmin instinct apac has a bug with navigation and courses!

I’m on version 13.20 but when following a course, suddenly the navigation will start sending me back to the beginning of the course, and all the data will be incorrect as it’s relating to the distance etc. to the start of the course. Also if off course, and subsequently going back on course, the navigation will attempt to send me to the start or a checkpoint behind me. However even if reversing to that checkpoint, the navigation doesn’t self correct and still doesn’t work. It’s a frustrating bug.