Polyglot Notebook: [DevExE2E] If Markdown in Edit status -> collapse the markdown, the tip "1 cell hidden" doesn't show.

[v-hozha1]

Describe the bug

Using extension Polyglot Notebook in VS Code If Markdown in Edit status -> collapse the markdown, the tip "1 cell hidden" doesn't show.

Detailed Repro Build info: VSCode 1.77.3 + dotnet-interactive-vscode-1.0.4227011.vsix VS Code Version: 1.77.3 (user setup) Commit: 704ed70d4fd1c6bd6342c436f1ede30d1cff4710 Date: 2023-04-12T09:16:02.548Z Electron: 19.1.11 Chromium: 102.0.5005.196 Node.js: 16.14.2 V8: 10.2.154.26-electron.0 OS: Windows_NT x64 10.0.22621 Sandboxed: No

dotnet-interactive-vscode-1.0.4227011.vsix build link: https://dev.azure.com/dnceng/internal/_build/results?buildId=2168897&view=artifacts&pathAsName=false&type=publishedArtifacts

sdk info: dotnet-sdk-7.0.203-win-x64.exe

Note: 1.It's a not a regression issue. It also repro on VSCode 1.77.3 + dotnet-interactive-vscode-1.0.4219021.vsix. 2.Repro VM: 172.16.195.186

Steps: 1.Open the notebook from https://github.com/dotnet/interactive/blob/main/NotebookTestScript.dib 2.Click the > icon in markdown left field - check UI 3.Double click in markdown(ensure it's in edit status) -> Click the > icon in markdown left field -> check UI

Expected Results: The tip "1 cell hidden" will show in page.

Actual Results: If Markdown in Edit status -> collapse the markdown, the tip "1 cell hidden" doesn't show.

Please complete the following:

Which version of .NET Interactive are you using? (In a notebook, run the #!about magic command. ):

• OS
  • [ √] Windows 11
  • [ ] Windows 10
  • [ ] macOS
  • [ ] Linux (Please specify distro)
  • [ ] iOS
  • [ ] Android
  • Browser
  • [ ] Chrome
  • [ ] Edge
  • [ ] Firefox
  • [ ] Safari
  • Frontend
  • [ ] Jupyter Notebook
  • [ ] Jupyter Lab
  • [ ] nteract
  • [√ ] Visual Studio Code
  • [ ] Visual Studio Code Insiders
  • [ ] Visual Studio
  • [ ] Other (please specify)

[colombod]

@rebornix I am not sure what is the indented behaviour

[rebornix]

This is a bug ;(, let's track it here https://github.com/microsoft/vscode/issues/184959

[v-hozha1]

This issue still repro on VS Code 1.93.1 + dotnet-interactive-vscode-1.0.5468011.vsix + dotnet-sdk-8.0.401-win-x64.