Thank you for your feedback and kind words about Spine!
Regarding the title bar issue, Spine uses an "undecorated" window, meaning it does not use the standard Windows title bar and edges. This is why you cannot move the window by clicking on the title bar as you would in other applications like Photoshop or Chrome. The custom window design is also why the Windows snap assist functionality (e.g., dragging to the screen edge to resize) does not work with Spine. Implementing these features ourselves to mimic Windows behavior is challenging and may not work exactly the same way.
We understand that these limitations can be inconvenient, and we have plans to rework Spine's windowing system in the future, which may address these issues. In the meantime, we appreciate your patience and understanding.
