How to reproduce:
1. Open the user-attached project (DragAndDropBug.zip)
2. Open the "Test Window" by going to the menu bar: Window > Test Window
3. While the window is floating drag any asset from the Project panel into it
4. Dock the Test Window
5. Drag any asset from the Project panel into the docked window again
6. Observe the crash
Reproducible with: 2020.3.43f1, 2021.3.16f1, 2022.2.2f1, 2023.1.0a25
Reproducible on: Ubuntu 20.04
Not reproducible on: Windows 10
Last 7 lines of the crash stacktrace:
#0 0x00563b83e06a3c in burst_signal_handler(int, siginfo_t*, void*)
#1 0x007f4df9e3ea30 in __sigaction
#2 0x007f4e013492d4 in gdk_window_get_frame_extents
#3 0x007f4e01349318 in gdk_window_get_root_origin
#4 0x00563b853fa067 in GetGdkDragData(void*, int*, int*, int*, int*, unsigned int*)
#5 0x00563b853d4332 in HandleDrag(InputEvent::TypeEnum, GUIView*, void*, unsigned int)
#6 0x00563b853d3573 in OnGUIViewDragMotion(GUIView*, void*, int, int, unsigned int)