I solved this by using v-show instead of v-if.
I had the component inside a v-if statement.
<div v-if="!isLoading">
<GMap ref="mapRef" />
</div>
I just changed that to v-show
<div v-show="!isLoading">
<GMap ref="mapRef" />
</div>
And now the object is available in mounted(). Still find it strange that the console.log(this.$refs) showed it being available as a key on this.$refs, even though it actually wasn’t? Thats strange behaviour.
The other wierd thing was, that even if I tried to access this.$refs.mapRef in my data loading section, AFTER THE DATA WAS LOADED, (ie after isLoading=false), I still couldn’t access it. Even though then, it should’ve been available because the v-if passed.
So v-show solved it, by just hiding the div, instead of not rendereding it. Stupid little workaround.