World stuck loading + Character and dressing room glitches

Minecraft takes a long time to start. My character does not load correctly, items in the Dressing Room are glitched.

When I try to enter a world, the game gets stuck on the loading screen. The background animation keeps moving and the music continues playing, but the world never loads and I never enter the game, loading process never finishes.

I have already restarted my iPhone, updated software and updated Minecraft, but the issue persists.