Changing the Number of Swapchain Buffers for Vulkan from (Player Settings > Other) leads to the Editor freezing on GUIView.RepaintAll.RepaintScene
Refer to the attached Video.

Steps to Reproduce:
1. Create a New Project
2. Edit > Project Settings > Player > Other Settings
3. Uncheck Auto Graphics API for Windows
4. Add Vulkan and restart Editor as prompted
5. Other settings > Vulkan Settings > Number of Swapchain buffers > Change

Actual Result:
Editor freezes on changing the Number of Swapchain Buffers

Expected Result:
Editor should not freeze and the Number of Swapchain Buffers should change (2 or 3)

Occurring on
2020.2.0a5, 2020.2.0a1, 2020.1.0b4, 2020.1.0a23

Working Fine on:
2020.1.0a22, 2019.3.7f1

Environment:
Windows 10 only

License type: Pro