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[DEPR]: Legacy Unit Editor #35261

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Description

@kdmccormick

Please first read the parent DEPR ticket, [DEPR]: All Legacy Studio Frontends.

RFC Start Date

2025-02-19

Target Plan Acceptance Date

2025-03-14

Target Transition Unblocked Date

2025-12-14

Currently blocked by:

Target Breaking Changes Unblocked Date

2026-01-14

Earliest Open edX Named Release With Breaking Changes

Deprecated but available (via opt-out) in Teak. Will be missing new Content Libraries features.

Full removal by Verawood.

Rationale

Maintaining the legacy unit page and the React-based unit page in tandem is a major burden for maintenance and feature development.

Removal

We will remove the legacy Django-rendered Studio unit editor defined in edx-platform.

This bug is a blocker:

Removing the legacy unit editor will also effectively remove access to the "big three" legacy component editors, so deprecation must be unblocked for each of those before we can proceed with removal of the unit editor (UPDATE: This will be done by 14 Dec 2025):

Replacement

The new React-based Studio unit editor in frontend-app-course-authoring.

Additional Info

No response

Activity

  1. self-assigned this
    on Aug 8, 2024
  2. added
    deprProposal for deprecation & removal per OEP-21
    on Aug 8, 2024
  3. kdmccormick commented on Feb 10, 2025

    @kdmccormick
    MemberAuthor

    I plan on officially Communicating this DEPR and its child DEPRs soon. In the meantime, see #proj-studio-mfe in Slack for the latest.

  4. moved this from Proposed to Communicated in DEPR: Deprecation & Removalon Feb 19, 2025
  5. kdmccormick commented on Feb 19, 2025

    @kdmccormick
    MemberAuthor
  6. moved this from Communicated to Accepted in DEPR: Deprecation & Removalon Mar 17, 2025
  7. moved this from Plan Accepted to Blocked in DEPR: Deprecation & Removalon May 15, 2025
  8. moved this from Blocked to Transition Unblocked in DEPR: Deprecation & Removalon May 15, 2025
  9. kdmccormick commented on Sep 4, 2025

    @kdmccormick
    MemberAuthor

    Update Sep 2025: The only thing we know of that is preventing the removal of this is:

  10. moved this from Transition Unblocked to Plan Accepted in DEPR: Deprecation & Removalon Sep 16, 2025
  11. 13 remaining items

  12. moved this to 🔖 Ready in Aximprovements Teamon Apr 15, 2026
  13. removed their assignment
    on May 11, 2026
  14. moved this from Plan Accepted to Breaking Changes Unblocked in DEPR: Deprecation & Removalon Aug 7, 2026
  15. kdmccormick commented on Aug 7, 2026

    @kdmccormick
    MemberAuthor

    The final blocker has been addressed: the React-based unit editor now supports XBlocks with children.

    The Aximprovements team will begin removal of the legacy unit editor shortly.

  16. moved this from 🔖 Ready to 🏗 In progress in Aximprovements Teamon Aug 10, 2026
  17. moved this from 🏗 In progress to 👀 In review in Aximprovements Teamon Aug 24, 2026
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