Markdown Preview doesn't work in Plan Mode edit inside the Agents App

[vritant24]

Does this issue occur when all extensions are disabled?: Yes/No

Version: 1.119.0-insider (Universal)
Commit: 530cb5d
Date: 2026-05-03T14:51:49-07:00
Electron: 39.8.8
ElectronBuildId: 13870025
Chromium: 142.0.7444.265
Node.js: 22.22.1
V8: 14.2.231.22-electron.0
OS: Darwin arm64 25.4.0

Steps to Reproduce:

1. Open the Agents App
2. Ask the agent to create a plan
3. Expand the plan and click the preview button on the top right

expected: open preview to the side should show a markdown preview
actual: the buttons is a noop

[lostintangent]

@vritant24 this should now be fixed. Could you try to repro it and see if you're still hitting the issue?

[justschen]

the new default for this is also to edit inline for the plan widget. playing around with this vs. editing in the popout, but that's besides the point i guess haha.

[vritant24]

This still repros.

1. open terminal in agentswindow
2. run echo "hello" > file.md
3. open the md file with code-insiders ./file.md. You should see

   hello

4. Close the preview and run echo "hi" > file.md in the terminal
5. open the md file with code-insiders ./file.md. You still see

   hello