Ever since Bedrock 1.16.2, Minecraft on the Nintendo Switch has been acting weird. Sometimes when I press the home button on my Pro Controller when running Minecraft, my switch froze and had to restart by holding down the power button. My console also froze randomly in-game and had to restart but thanks to autosaves, I didn't lose any data. I hope this issue gets fixed soon.
Related issues
Comments

Thank you for your report!
We're actually already tracking this issue at MCPE-95621, so we will resolve and link this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature, to see if the issue has already been mentioned.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki
Go to https://bugs.mojang.com/browse/MCPE-95621 its the main post for this bug