The Bug

When I select Apocolypse+ 12, it goes to Apocolypse+ 14.

How to reproduce

Go to a difficulty that is Apocolypse+ that is lower/higher than your power level.

: Notice how it goes to normal difficulty before you start the mission.

What I expected

It will stay in the misson you selected and start the misson. This bug forces you to be weaker to go to a lower Apocolypse+ difficulty.