This is extremely good news. MapLibre is an awesome project, but it has huge problems with 3D terrain. In my opinion the entire 3D "stack" needs to be complete

This is extremely good news. MapLibre is an awesome project, but it has huge problems with 3D terrain. In my opinion the entire 3D "stack" needs to be completely rewritten in order to properly support terrain, because navigation panning/zooming is badly broken, where the devil is in the detail. At a first glance all seems OK, but when you really use it, you'll notice that it's pure chaos which leads to errors in navigation. Also overlaying images over terrain is broken. It's always terrain what causes the problem. In 2D it's rock solid.