kindly relay this to developers team for improvement via Members app
Members app → add sign (+) → send report → apps
your feedback experience is important to them
This is so stupid from Samsung and is the reason I have just placed an order for Garmin fenix 6s pro.
However, there is a way around it. The total calories can be found in the samsung health app in the active widget where it shows all calories burnt for the day.
In addition, some watch faces from developer AWF has a calories complication that shows the total burnt.
See attached images.