Editor crashes if Unity is closed when both Light baking and exporting a package is being run simultaneously. Crash does not occur if Unity is being closed while only one of the above process is running. Refer the attached video

Steps to reproduce:
1) Create a new project
2) Create a Cube and a Terrain
3) Window > Rendering > Lighting > Auto-generate > ON
4) Right Click in Project > Export package
5) Right Click Unity from taskbar > Close Window

Actual Result: Editor crashes after the package is exported

Expected result: Editor should not crash on closing the window

Occurring on: 2021.2.0a1, 2021.1.0b2, 2020.2.2f1, 2020.1.10f1, 2019.4.12f1

Environment: Only on Windows