Maps App "3D" icon blue even though it is NOT in the 3D view...

So this has probably been going on for a while but i'm just now writing something up about it.

When i'm looking at the Maps - either on an iPhone, or iPad.... the 3D icon is sometimes blue, but NOT showing in 3D view.....if i tap on the 3D icon - the icon remains blue, but also adjusts into the 3D view....

so why is it that it's blue when it is NOT in 3D view?

Other times - it is not blue, and it is not in 3D - so it works as designed....but most of the time not.

Is this a bug and has this happened to anyone else?