Fill extrusion height interpolation works only between integer numbers of zoom

When trying to change the interpolation parameter of fill-extrusion-height in the maplibre 3d building example to use non integer zoom values, it isn't respected.

https://jsbin.com/tihejohiva/1/edit?html,console,output

It works only between fixed integer numbers so my settings instead of running between 15 and 15.1 actually run between 15 and 16.