Microsoft/vscode

Restored custom editors never load if the extension is uninstalled

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#125,582 opened on Jun 5, 2021

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 (8 comments) (0 reactions) (2 assignees)TypeScript (74,848 stars) (10,221 forks)batch import
bugcustom-editorshelp wanted

Description

Repro:

  1. Install Luna Paint
  2. Open an image
  3. Uninstall Luna Paint
  4. Reload the window

The editor will stay in loading animation forever:

Contributor guide

Tech stack
typescript
Domain
desktop
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
VS Code extension APITypeScript
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the custom editor lifecycle in VS Code, particularly how editors are restored after extension uninstall. Look at the custom editor contributor (likely in src/vs/workbench/contrib/customEditor) and the editor group restoration code (e.g., src/vs/workbench/services/editor). The issue likely involves a missing extension causing the editor to fail to load. Check existing comments for any hints or attempted fixes.