This bug only occured for Andorid phones for a weird reason, idk why it didn't happend to Windows 10. Lots of people have reported this and it's not even fixed yet.
(Opinion) Information: This bug occured when something in the game breaks. There is also a weird bug when your skin only showed your head. When something in the game breaks, the worlds kinda, freeze, so the "Loading Resource Pack" screen only showed up.
Phone: ASUS Zenfone Go
Linked issues
duplicates 1
Comments 1

Thank you for your report!
However, this issue is a Duplicate of MCPE-34379.
If you have additional information, please add it to that report.
Please search before reporting, as it's likely that one exists already.
Quick Links:
📓 Issue Guidelines – 💬 Community Support – 📧 Customer Support – 📖 Game Wiki