Maniphest T419350

localStorage clipboard becomes unusable after copying a list of Z89/HTML fragments
Closed, ResolvedPublicBUG REPORT
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Assigned To

Authored By

	YoshiRulz
	Mar 8 2026, 7:38 PM

Description

Steps to replicate the issue (include links if applicable):

Go to Z27926
Attempt to paste, to verify the clipboard is working
Copy the empty list
Try pasting again

What happens?:

Clicking "Paste from clipboard" closes the context menu but otherwise has no effect. This persists through page reloads.
Errors are logged to the browser console, of which this seems relevant:

TypeError: objectType.toLowerCase is not a function
    matchesFilter ClipboardDialog.vue:83

What should have happened instead?:

The clipboard history modal should appear.

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):
live wiki

Other information (browser name/version, screenshots, etc.):
FF 148 on Ubuntu

Run localStorage.removeItem("ext-wikilambda-app-clipboard") to un-softlock.

Details

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	Add typeToString with noArgs=true to non-string types when matching	mediawiki/extensions/WikiLambda	master	+4 -4

Customize query in gerrit

Event Timeline

YoshiRulz created this task.Mar 8 2026, 7:38 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMar 8 2026, 7:38 PM

Maintenance_bot added a project: Abstract Wikipedia team.Mar 8 2026, 8:30 PM

YoshiRulz renamed this task from localStorage clipboard gets softlocked after copying a list of Z89/HTML fragments to localStorage clipboard becomes unusable after copying a list of Z89/HTML fragments.Mar 9 2026, 1:45 AM

I see 2 things here:

Trying to copy paste the top level fragments does not work and breaks the clipboard
Trying to copy paste item 2 to item 1 in the list does not work (but without errror)

Change #1250605 had a related patch set uploaded (by Genoveva Galarza; author: Genoveva Galarza):

[mediawiki/extensions/WikiLambda@master] Add typeToString with noArgs=true to non-string types when matching

https://gerrit.wikimedia.org/r/1250605

gerritbot added a project: Patch-For-Review.Mar 11 2026, 2:39 PM

gengh claimed this task.Mar 11 2026, 2:39 PM

Jdforrester-WMF changed the task status from Open to In Progress.Mar 11 2026, 3:02 PM

Jdforrester-WMF triaged this task as Medium priority.

Jdforrester-WMF edited projects, added Abstract Wikipedia team (26Q3 (Jan–Mar)), Essential-Work; removed Abstract Wikipedia team.

Jdforrester-WMF moved this task from Incoming to Ready to deploy on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.

Change #1250605 merged by jenkins-bot:

[mediawiki/extensions/WikiLambda@master] Add typeToString with noArgs=true to non-string types when matching

https://gerrit.wikimedia.org/r/1250605

Maintenance_bot removed a project: Patch-For-Review.Mar 11 2026, 3:31 PM

ReleaseTaggerBot added a project: MW-1.46-notes (1.46.0-wmf.20; 2026-03-17).Mar 11 2026, 4:00 PM

gengh moved this task from Ready to deploy to Needs Sign-off on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.Tue, Mar 17, 12:41 PM

gengh moved this task from Needs Sign-off to Ready to deploy on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.

Jdforrester-WMF moved this task from Ready to deploy to Needs Sign-off on the Abstract Wikipedia team (26Q3 (Jan–Mar)) board.Wed, Mar 18, 5:14 PM

gengh closed this task as Resolved.Mon, Mar 23, 10:21 AM

Forgot to reply, but yes, there was (at least) a second way it could break. I've been using the clipboard in the past few days without issue, and my original example works too.

localStorage clipboard becomes unusable after copying a list of Z89/HTML fragmentsClosed, ResolvedPublicBUG REPORTActions

Description

Details

Event Timeline

localStorage clipboard becomes unusable after copying a list of Z89/HTML fragments
Closed, ResolvedPublicBUG REPORT
Actions