Incorrect line numbers highlighted in coverage report

[brian428]

Bug Report or Feature Request (mark with an x)

- [X] bug report -> please search issues before submitting
- [ ] feature request

Command (mark with an x)

- [ ] new
- [ ] build
- [ ] serve
- [X] test
- [ ] e2e
- [ ] generate
- [ ] add
- [ ] update
- [ ] lint
- [ ] xi18n
- [ ] run
- [ ] config
- [ ] help
- [ ] version
- [ ] doc

Versions

Windows 10, Node 8.11.3, NPM 5.6.0, CLI 6.1.1

Repro steps

Run Jasmine tests with coverage report enabled. The report it creates has coverage warnings highlighted, but they are all in the wrong (seemingly random) places:

I'm not sure if this is actually a CLI problem, or an Istanbul problem, or a source map problem, or some combination. I've tried turning on and off sourceMap and evalSourceMap, but it doesn't seem to affect the results.

Desired functionality

Correct coverage report output.

[brian428]

I should also add that you can see this if you generate a fresh project with 6.1.1, add something simple like a method with an if block in the AppComponent, and run a test with coverage:

[brian428]

Ah, never mind, I see there's already an issue for this at #11672.

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