QSFS mount point is unusable when file size is higher than storage capacity

I deployed a vm with 10 GB QSFS storage using the terraform example in the manual. Curious as to see what happens when all the space is used up, I decided to store 20GB of random data in there. In the end I was unable to access the mounting point because the socket was not connected. My shell history should tell the tale as well:

vm1:/store# df -h
Filesystem                Size      Used Available Use% Mounted on
dev                     480.5M         0    480.5M   0% /dev
run                     486.2M      4.0K    486.2M   0% /run
tmpfs                   486.2M         0    486.2M   0% /dev/shm
/dev/root                 1.7T      3.7M      1.7T   0% /
2758446qsfs              10.0G      1.0K     10.0G   0% /store
vm1:/store# head -c 20401094656 /dev/urandom > myfile
vm1:/store# ls
ls: .: Socket not connected