GRASS GIS Plugin not loading in QGIS 3

Ok, this is slightly embarrassing but I'll post the answer here anyway in case someone is as blind as I was. Apparently, there are two QGIS executable files: C:\OSGeo4W64\bin\qgis-bin.exe and C:\OSGeo4W64\bin\qgis-bin-g7.4.1.exe. In Windows, when firing up a program via the Windwos startup button, it runs qgis-bin.exe by default and GRASS does not work. When you run qgis-bin-g7.4.1.exe however, it GRASS works.

I'll show myself out