Metaculus / Metaculus/metaculus

Fix infinite render loop in MDX editor on question creation

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#4,242 1 comment 0 reactions 1 assignee View on GitHub

@ncarazon is already working on this.

Since Feb 10, 2026.

Low Priority Stale
Dominant language
TypeScript
Stars
113
Forks
34
Avg merge
16h 34m
Merged PRs (30d)
30

Description

The MDX editor on the question creation page is hitting an infinite render loop for some users.

Sentry: https://metaculus.sentry.io/issues/METACULUS-FRONTEND-1JY (184 events, 8 users)

Error on /questions/create/question:

Error: Maximum update depth exceeded. This can happen when a component 
repeatedly calls setState inside componentWillUpdate or componentDidUpdate.

The stack trace points to the Lexical editor's selection handling code in the MDX editor integration. Since only 8 users are affected, this is likely a specific user action or edge case that triggers it.

Need to:

  • Try to reproduce the issue
  • Review the MDX/Lexical editor integration for state management bugs
  • Add guards to prevent infinite loops

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  3. Fork the repository and make your change on a branch.
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