If I am holding a torch and then press home, if I come back to Minecraft pe from recent apps menu, all blocks turn orange. Was playing on Samsung galaxy j2 pro

Thank you for your report!
However, this issue has been closed as a Duplicate of MCPE-31377.

Your additional information and observations are very useful, so if you can add them to the comments section of the parent issue it would be appreciated.

Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Feedback – 📖 Game Wiki