Regression: macOS screenshot floating thumbnail can't be dragged into Windows VM (Parallels 26.2.2 /

[IIB]

Environment:

• Parallels Desktop: 26.2.2 (57373)
• macOS: Tahoe 26.3
• Guest OS: Windows 11 (Parallels VM)
• Clipboard sync: Bidirectional (enabled)
• "Isolate Windows from Mac": OFF

Issue / Summary:
After taking a macOS screenshot, the floating thumbnail (bottom-right preview) can no longer be dragged & dropped into the Windows 11 VM (e.g., Teams/Outlook/Explorer/etc.).
Drag & drop integration itself works because dragging a saved PNG file from macOS Desktop into Windows works normally. The problem seems isolated to floating thumbnail → Windows transfer only.

Steps to reproduce:

1. Take a screenshot on macOS (Cmd+Shift+4 or Cmd+Shift+5; floating thumbnail appears).
2. Try dragging the floating thumbnail into any app inside the Windows VM.
3. Drop fails (thumbnail cannot be "picked up" / Windows doesn't accept it).

Expected:
Floating thumbnail can be dragged into Windows apps as an image.
Actual:
Floating thumbnail cannot be dragged into Windows VM.
Workarounds that do work:

• Control+Command+Shift+4 → paste in Windows with Ctrl+V
• Save screenshot to Desktop (Cmd+Shift+5 Options → Save to Desktop) and drag the resulting PNG file into Windows (works)

Impact:
This increases steps for frequent screenshot sharing (productivity regression).
If needed, I can provide a screen recording and a technical data report ID.

Tags: drag-and-drop, screenshot, floating-thumbnail, macOS-Tahoe, regression