Please add the msfs-2020 or msfs-2024 tag to your post, depending on which sim your post is about.
It seems the “both” position for the fuel selector in the Draco is not working. The fuel is drained from the last wing tank selected before moving the selector to the “both” position. If you move from Right to Both, the fuel is drained from the right wing tank. Same happens with the left tank. In fact, when you load the flight the selector is in the “both” position, but fuel is drained from the left wing tank.
Switching off the pump is a good way to verify that in “both” position the fuel is being drained from the last tank selected.
This is a bug for me. Anyone can confirm this?