I have a curiosity : can the postal service of your country issue stamps depicting living people?
In Italy, it’s mostly no. The only exceptions are the Pope (and there are actually some stamps with the living Pope) and the President of the Italian Republic (but, as far as I remember, no stamps of the president in office has ever been issued, and all stamps about past presidents have beed issued after their death)
On some occasions stamps have been issued where a specific person can be identified by a silhouette (for example stamps with an image from a film or a football player holding a cup), but the stamps are not about them and their aspect is not explicit.
I think there’s no restriction for Indonesian post to issue stamps portaying someone who’s still alive. We have/had stamps of president and vice president. Also first ladies from different presidents. Some musical legends as well
In Ukraine, there are no restrictions on the image of a person on a stamp.
There is a stamp of the first cosmonaut of Ukraine (issued during his lifetime)