Folder is not syncing after check and uncheck under Select sync folders

1. DM: Create a folder “sample” and import a file “test.xlsx”
2. Drive: Wait for Sync
3. Drive: Open file “test.xlsx”
4. Drive: Uncheck the folder from Select sync folders in DS
5. DM: Delete “test.xlsx” filein DM and check file will be removed under Select Sync Folders in DS
6. Drive: Check the folder “sample” under Select sync folders in DS
7. Drive: Close the file “test.xlsx”
8. Drive: Folder “sample” is not present under My Docs in DS

Actual Result : "sample" folder didnot sync under My Docs
Expected Result: "sample" folder should sync under My Docs