Test explorer doesn't show suite correctly

[centreboard]

Expected Behavior

Javascript tests are displayed in VS Test Explorer by Project > File > Suite > Test

Actual Behavior

The tests output shows the details of file::suite::test

Creating Test Case:tests\FormatServiceTests.js::FormatService - format()::date
Creating Test Case:tests\XAxisTests.js::global::XAxisService.axis() - Index Values

But the test explorer seems to split on the last . and shows js instead of FormatService - format()
and XAxisService > axis() - Index Values instead of global > XAxisService.axis() - Index Values

These examples are in Jest (26.4.2), but I've seen the same issue trying Jasmine.

FormatServiceTests is using

describe("FormatService - format()", () => {
    test("date", () => {
        ...
    });
});

while
XAxisTests is a top level test

test("XAxisService.axis() - Index Values", () => {
    ...
});

• NTVS Version: 1.5.20902.1 Commit Hash:b474efcb6f92db52a8f8e2e6a8cb9648476885cc
• Visual Studio Version: 16.8.0 Preview 3.2
• Node.js Version: 10.15.0

Steps to reproduce

1. Create a .netstandard project following https://docs.microsoft.com/en-us/visualstudio/javascript/unit-testing-javascript-with-visual-studio?view=vs-2019#unit-test-net-core-and-net-standard
2. Add test files into the tests folder and rebuild the project