Summary:

Pausing the game does not work. There are several ways to notice this, but I'll show you one of them.

Steps to reproduce:

1- Stay at a very high height (a height where you are sure you will die if you fall to the ground, for example at height 100).

2- Then fall to the ground in survival mode.

3- Press the ESC button.

Observed results:

For some reason pausing the game just doesn't work. Only the menu appears, but the game does not freeze, as if we were in multiplayer mode.

Expected results:

The game should freeze (with the menu open, but with the game frozen)
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I ask you to fix this as soon as possible, because it interferes with the gameplay too much and I already died several times because I couldn't pause the game. I left a comparison with a Java edition video just for you to have an idea of ​​how it should work.