Description
Runtime version .net framework 4.7.2
Create a new C# project and add reference Microsoft.Extensions.Configuration 3.1.0, build project, then you will see the following dlls have wrong modified date in the bin folder.

Reproduction Steps
Create a new C# project and add reference Microsoft.Extensions.Configuration 3.1.0, build project, then you will see the following dlls have wrong modified date in the bin folder.
Expected behavior
The modified date should be same with created date.
Actual behavior
The modified date is 1/1/1980.
Regression?
It works about one week ago.
Known Workarounds
No response
Configuration
No response
Other information
No response