Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 980 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.64
Broken: version: 2.80 (sub 69), branch: master, commit date: 2019-05-17 18:03, hash: rB3022dd2b27fd
Short description of error
When you repeatedly attempt to close Blender with an unsaved .blend file, multiple copies of the save pop-up appear.
You can drag them accross the screen and it looks pretty broken.
Exact steps for others to reproduce the error