Ticket number #171034

The response back was:
Please perform the steps below for troubleshooting:

1. Please navigate to this folder C:\ProgramData\tkc.io\
2. Open file cf86980f-23c3-45b9-ac36-0800b8a66493.cbb in the Notepad
3. Change the line <SyncBeforeRun>false</SyncBeforeRun> to <SyncBeforeRun>true</SyncBeforeRun>
4. Remove a pre-backup action to syncronize the drive
5. Reproduce the issue and let us know if it helps or not

The plan is currently progressing, and logs indicate that a sync occurred.

I'm guessing this is a case of integrating syncing better in the back-end, and the GUI and documentation being slightly behind.