Can no longer fly on the Xbox with the extra 1.17

Since the new update (1.17)

I don't think you can fly with the elytra anymore (just play on Xbox one)

So in the Inter you will stop with the jump button as soon as you are in the air but it doesn't work…

Either the elytra is broken, you don't have it on, or you're doing it wrong, that has to be done. Press just in case of jumping

Can an Elytra be broken?

Yes then you have to repair it first. It then looks frayed