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Maniphest T399672

VisualEditor standalone demo broken due to "404 Not Found" on .less files
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Description

Steps:

  1. Reading about VisualEditor. https://en.wikipedia.org/wiki/VisualEditor
  2. Visit website. https://www.mediawiki.org/wiki/VisualEditor
  3. Visit demo. https://en.wikipedia.org/w/extensions/VisualEditor/lib/ve/demos/ve/desktop.html

Expected:

Demo that looks like VE.

Actual:

Fonts degrade to Times New Roman, and most widgets and modals have various parts rendering in broken or surprising ways.

Console error
Object { type: "File", message: "'https://en.wikipedia.org/w/extensions/VisualEditor/lib/ve/src/ce/styles/nodes/ve.ce.FocusableNode.less' wasn't found (404)", …
Object { type: "File", message: "'https://en.wikipedia.org/w/extensions/VisualEditor/lib/ve/src/ui/styles/ve.ui.icons.less' wasn't found (404)", …
Object { type: "File", message: "'https://en.wikipedia.org/w/extensions/VisualEditor/lib/ve/src/ui/styles/ve.ui.Surface.less' wasn't found (404)", …

Screenshot 2025-07-15 at 20.20.32.png (1,496×602 px, 345 KB)

Screenshot 2025-07-15 at 20.17.22.png (1,740×600 px, 55 KB)

Screenshot 2025-07-15 at 20.17.02.png (950×424 px, 44 KB)

Other information:

I'm guessing this broke in https://gerrit.wikimedia.org/r/c/VisualEditor/VisualEditor/+/1010234/ or in a later change related to adopting Less.js directly in VisualEditor core.

Details

Related Changes in Gerrit:
SubjectAuthorRepoBranchLines +/-
mime: Add mime types for `*.less`Reedymediawiki/coreREL1_44+1 -0
mime: Add mime types for `*.less`Reedymediawiki/coreREL1_43+1 -0
mime: Add mime types for `*.less`Reedymediawiki/coreREL1_39+1 -0
mime: Add mime types for `*.less`Krinklemediawiki/coremaster+1 -0
Customize query in gerrit

Event Timeline

Krinkle created this task.Jul 16 2025, 3:22 AM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJul 16 2025, 3:22 AM
gerritbot added a comment.Jul 16 2025, 3:27 AM

Change #1169802 had a related patch set uploaded (by Krinkle; author: Krinkle):

[mediawiki/core@master] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1169802

gerritbot added a project: Patch-For-Review.Jul 16 2025, 3:27 AM
Krinkle added a project: MediaWiki-libs-Mime.Jul 16 2025, 3:27 AM
gerritbot added a comment.Jul 16 2025, 10:00 AM

Change #1169802 merged by jenkins-bot:

[mediawiki/core@master] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1169802

Maintenance_bot removed a project: Patch-For-Review.Jul 16 2025, 10:30 AM
gerritbot added a comment.Jul 16 2025, 10:58 AM

Change #1170119 had a related patch set uploaded (by Reedy; author: Krinkle):

[mediawiki/core@REL1_44] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1170119

gerritbot added a project: Patch-For-Review.Jul 16 2025, 10:58 AM

Change #1170120 had a related patch set uploaded (by Reedy; author: Krinkle):

[mediawiki/core@REL1_43] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1170120

gerritbot added a comment.Jul 16 2025, 11:00 AM

Change #1170121 had a related patch set uploaded (by Reedy; author: Krinkle):

[mediawiki/core@REL1_39] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1170121

ReleaseTaggerBot added a project: MW-1.45-notes (1.45.0-wmf.11; 2025-07-22).Jul 16 2025, 11:01 AM
gerritbot added a comment.Jul 16 2025, 11:12 AM

Change #1170121 merged by jenkins-bot:

[mediawiki/core@REL1_39] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1170121

gerritbot added a comment.Jul 16 2025, 11:17 AM

Change #1170120 merged by jenkins-bot:

[mediawiki/core@REL1_43] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1170120

gerritbot added a comment.Jul 16 2025, 11:19 AM

Change #1170119 merged by jenkins-bot:

[mediawiki/core@REL1_44] mime: Add mime types for `*.less`

https://gerrit.wikimedia.org/r/1170119

Maintenance_bot removed a project: Patch-For-Review.Jul 16 2025, 11:30 AM
ReleaseTaggerBot added projects: MW-1.39-notes, MW-1.44-notes, MW-1.43-notes.Jul 16 2025, 12:01 PM
DLynch subscribed.Jul 16 2025, 4:00 PM

I'm pretty sure it was more recent breakage than https://gerrit.wikimedia.org/r/c/VisualEditor/VisualEditor/+/1010234/ -- that was early 2024, and I'm at least fairly confident that I've used the desktop demo to show things to people this year.

Krinkle closed this task as Resolved.Aug 3 2025, 8:03 PM
Krinkle claimed this task.
Krinkle added a project: Verified.
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