Code coverage is not shown

I have sonarcloud analysis setup on public repo https://github.com/GTmAster/SiGamePackOptimizer with github actions on master branch and pull requests.
In the logs I see, that coverage report was generated by dotnet test and picked up by sonarcloud, but I still see no coverage information on https://sonarcloud.io/dashboard?id=SiGamePackOptimizer&branch=master.

Test Run Successful.
Total tests: 32
     Passed: 32
 Total time: 8.9403 Seconds

Calculating coverage result...
  Generating report '../coverage.xml'

+---------------------+--------+--------+--------+
| Module              | Line   | Branch | Method |
+---------------------+--------+--------+--------+
| SiGamePackOptimizer | 72.81% | 75%    | 76.74% |
+---------------------+--------+--------+--------+

+---------+--------+--------+--------+
|         | Line   | Branch | Method |
+---------+--------+--------+--------+
| Total   | 72.81% | 75%    | 76.74% |
+---------+--------+--------+--------+
| Average | 72.81% | 75%    | 76.73% |
+---------+--------+--------+--------+

INFO: Sensor C# Tests Coverage Report Import [csharp]
INFO: Parsing the OpenCover report /github/workspace/./coverage.xml
INFO: Adding this code coverage report to the cache for later reuse: /github/workspace/./coverage.xml
INFO: Sensor C# Tests Coverage Report Import [csharp] (done) | time=46ms

What am I missing?

Can you confirm that you are still experiencing an issue?
If so, please include your GitHub actions workflow yaml file.

Yes, I’m still experiencing the issue. Workflow file:

on:
  push:
    branches:
      - master
  pull_request:
      types: [opened, synchronize, reopened]
name: code-quality
jobs:
  sonarcloud:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
      with:
        fetch-depth: 0
    - uses: actions/setup-dotnet@v1
      with:
        dotnet-version: 3.1.301
    - name: build and test
      run: |
        dotnet restore
        dotnet build --configuration Release --no-restore
        dotnet test --no-restore --verbosity normal /p:CollectCoverage=true /p:CoverletOutputFormat=opencover /p:CoverletOutput="..\coverage.xml"
    - uses: sonarsource/sonarcloud-github-action@master
      with:
        args: >
          -Dsonar.organization=gtmaster-github
          -Dsonar.projectKey=SiGamePackOptimizer
          -Dsonar.cs.opencover.reportsPaths="coverage.xml"
      env:
        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}