After a fresh windows installation and qt installation I got Qt creator 8.02 and 9.0.0-rc1 installed.

In both of them I noticed an odd behaviour when I choose to debug a single unit test with google test. 

In those cases (filters are applied to the gtest call), the filters seem to match no tests. And thus no tests get executed.

I compared with the behaviour in qt creator 7.0.0, what I used to use prior to reinstalling. The application output shows a difference in how the command line to call the test binary is quoted:

7.0.0
11:27:05: Debugging <project_path>\tests\unit_tests\debug\unit_testsd.exe "--gtest_filter=MyFilteredTestCase/*.*" "--gtest_catch_exceptions=0" ...

9.0.0-rc1
11:41:03: Debugging <project_path>\tests\unit_tests\debug\unit_testsd.exe "--gtest_filter="\""MyFilteredTestCase/*.*"\""" "--gtest_catch_exceptions=0" ...

8.0.2
11:31:24: Debugging <project_path>\tests\unit_tests\debug\unit_testsd.exe "--gtest_filter="\""MyFilteredTestCase/*.*"\""" "--gtest_catch_exceptions=0" ...