Today, Metroid Dread received its third update. It will automatically be downloaded when your Switch is connected to the internet. The patch notes are below:

• Fixed an issue where Samus’ damage detection would disappear under certain conditions.
  • We made the decision to fix this issue because there is a possibility that it may occur unintentionally, and if it does, it will result in a play experience that is far different from the way Metroid Dread was originally intended to be experienced.

Source: Nintendo Support