Super unfortunately, I made a mistake here, mis-understanding the feature… So the feature only locks files locally when they are being edited on the server, and unlocks when the file is closed again.
The other way around, however, isn’t there. But it is being worked on for the next release, at least with a sub-set of apps - a universal solution might take a bit more than one release, I don’t know… But hopefully soon, I am personally also really looking forward to this.