Just heard it on the news, so no further information as yet (will do some digging) but this is potentially explosive, or potentially really going to be depressing.
A police officer in Düsseldorf has changed his gender ID (we have self ID laws here) to female in order to be elligible for a promotion only available to female officers. (presumably only available to female officers for balance in the upper echelons).
He has also declared that when he gets married he will change his gender ID marker back to male. This is in line with our laws where that is possible, i think there is some time restriction on it, but theoretically you can change pretty much at will.
The police as an organisation are accusing the officer of using the self ID laws nefariously and it is going to court.
ETA: have checked and it is true. s/he was [i am in Germany, the law is clear on what i have to say] telling colleagues openly that after promotion they would be changing back to male before getting married.
The police are, of course, being accused of Queerphobia.