I am using MacBook Pro version 10.13.6. I have a Box account associated to my university student account. I am trying to use Box drive to stream files in my university box account to my desktop with an anticipation that the files chosen "online-only" will still show up, but it is just a placeholder since they will not actually take up my hard-drive space. However, the folders that are marked "online-only" still take up my hard drive space, as shown below

As we can see the size is correct, but there is still a 193.6 MB on disk, which is weird, since I didn't mark this folder to be "available offline". Ideally, it should show "0 byte on disk" if the folder does not really take up any hard-drive space. And it also seems like now the box drive is making all of my files taking up hard-drive in my laptop. I am wondering how I can deal with this issue. Is there anyway to fix this?
Just in case, I also check the size of this folder on my terminal and it also shows that it takes up my hard-drive space.

Thanks!