Going underwater in Minecraft bedrock Nintendo switch edition makes everything black except for entities

Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-32799.

Please add a vote and any new information to the main ticket, which will be updated accordingly.

If you have not, you might like to make use of the search feature before making a new ticket, as it's likely that the issue has been reported already.

Quick Links:📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki