Hi Junho Jeon,
We regret to inform you that currently, we don’t have support to float a window as separate child window in SfDockingManager. We have already logged a feature request for the same. We will implement this feature in any of our upcoming releases.
At the planning stage for every release cycle, we review all open features and identify features for implementation based on specific parameters including product vision, technological feasibility, and customer interest. We will let you know when this feature is implemented. We appreciate your patience until then.
Thank you for requesting this feature and helping us define it. We are always trying to make our products better and feature requests like yours are a key part of our product growth efforts.
Feedback link: Support to float a window as separate child window in DockingManager in UWP | Feedback Portal (syncfusion.com)
If you have any more specifications/suggestions to the feature request, you can add it as a comment in the portal and cast your vote to make it count.
Regards,
Bagavathi Perumal A