4 bugs in Minecraft Bedrock

(I apologize for the approximate English but I am Belgian and I speak French so I use Google Translate)

Hello, I want to report several bogs on Minecraft Bedrock

1. Text that protrudes from the screen.

How to reproduce this bug ? :

1. Open chat
2. Make the command

    /title @p title aaaaaaaaaaaaaaaaaaaaaaaaaaaaa

   (to have a long text)

3. The text will exceed (same bug if we do

   /title @p subtitle aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

2. The particles.

It's horrible, the particles slow down the game, it's hellish. We can quickly finish on 2 - 4 FPS

How to reproduce this bug ? :

1. Take a persistent potion
2. Throw plenty in the same place (3 potions are enough to perceive slowing down)

3. TNT

Before, on the "Playstation 4 edition" version the game was super fluid, kind of impossible to crash, even with 10,000 TNT, now 250 TNT are sufficient to run at 20 - 30 FPS ...

How to reproduce this bug? :

1. Place 250 TNT (or more)
2. Make them explode

4. *GAME OPTIMIZATION !!!*

*THE GAME IS INFAME AT THE LEVEL OF OPTIMIZATION !!! AS SOON AS YOU APPLY A LITTLE TOO ENTITY, IT'S OVER! THE GAME RUNS AT 20 FPS! HOW IS IT POSSIBLE THAT THE GAME IS SO BAD TO OPTIMIZE !!!*

Thanks for reading me ! Hoping that his bugs will be fixed as soon as possible because they were there before 2020...