Does this happen all over the world?
I ask, because there are several areas where ground texture is not availiable du to e.g. clouds in the source material. In this case MSFS defaults back to the autogen scenery.
BTW: ground texture updates are usually only changed/updated within a WU. The last one was the new Zealand WU. Unfortunatly ground textures can get worse with WUs, e.g. happend in the Austria, Germany, Switzerland WU, where large areas in Austria got very very ugly (and some also replaced by the ugly autogen scenery) compared to the version prior the WU.
In you case, I also think this is not a bug, since we can clearly see that parts of the map are still ortho graphics. → map online functionality seems to work in principle…