VFS and Selective sync can be mixed with unpredictable result

[HanaGemela]

Client: testpilot 2.7.0 (build 1794) macOS 10.15.3
Server: ocis beta8 with eos

Steps to reproduce:

1. Untick all the folders in selective sync list (Do not confirm the selection)
2. Enable VFS
3. Free up local space
4. Confirm the selection which folders should be synced in selective sync

Expected result: Once VFS is on, all the stuff related to selective sync disappears
Actual result: Some of the folders are not synced anymore. But appear again once VFS is off