[macOS] Cannot grab the window
**Version:**
redream.x86_64-mac-v1.5.0-996-ga1678c6
**Issue:**
Redream Window cannot be grabbed any more.
**Steps to Reproduce:**
- Make the app view window mode.
- Observe the window title bar.
- Try to grab the Redream logo or space next to System tab.
**Results:**
There is no Window title bar, and no Close button appears.
Also nothing happens when the window is grabbed to drag.
**Notes:**
The window resizing works fine. I'm not sure if this is a regression or expected behavior. I saw the same issue with redream.x86_64-mac-v1.5.0-957-ge3e5bd9, btw.
**Configuration:**
macOS 12.2 (21D49)
MacBook Pro (16-inch, 2019), 2.4GHz 8Core intel Core i9, 64GB, Radeon Pro 5500M 8GB