"VS Test" task hangs after the tests execution in release definition

Environment

• VSTS: (I will provide the needed information on demand)
• Agent
  • Private
  • OS: Windows_NT (10.0.14393)
  • Version: 2.123.0

Issue Description

When I run functional tests with the Visual Studio Test task, it is unable to finish and hangs indefinitely if I don’t set a timeout (currently 2 minutes), even if I receive the usual test summary:

2017-10-10T18:45:32.7372445Z Results File: c:\1\r2\a\TestResults\montybuilduser_monty-bld 2017-10-10 18_44_57.trx
2017-10-10T18:45:32.7392447Z 
2017-10-10T18:45:32.7392447Z Total tests: 7. Passed: 4. Failed: 3. Skipped: 0.
2017-10-10T18:45:32.7392447Z Test Run Failed.
2017-10-10T18:45:32.7392447Z Test execution time: 49.4539 Seconds

Notes:

• I’m running my tests with the TestAdapterPath set to “.” to be able to run the tests with xUnit.
• The tests are run by using Google Chrome in headless mode (Chrome is installed/updated through chocolatey on the private agent in the release definition).

Error logs

I don’t have any error logs when the final summary shows up 😞

[acesiddhu]

you can close WebDriver instance and Dispose it off

Webdriver.Close() Webdriver.Dispose()

[MJLHThomassen]

Same problem here. Not using ChromeDriver in my project. All tests pass, the test report is written, but the task hangs. Is there any way to debug which other processes might possibly not be properly closing down?