NOTE: this issue will be fixed on Monday. In the meantime, you can regain access to the Reply and New Topic Tools by **turning on the `Enable editing tools in source mode preference` in `Special:Preferences#mw-prefsection-editing`.
==== Error ====
```name=message
jQuery.Deferred exception: ve.ui is undefined
```
```name=trace,lines=10
ReplyWidget@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=ext.confirmEdit.CaptchaInputWidget%7Cext.discussionTools.ReplyWidget%2CReplyWidgetPlain%7Cjquery.lengthLimit%7Cmediawiki.widgets.AbandonEditDialog%2CvisibleLengthLimit%7Coojs-ui.styles.icons-editing-core&skin=timeless&version=ztntf:174:1
ReplyWidgetPlain@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=ext.confirmEdit.CaptchaInputWidget%7Cext.discussionTools.ReplyWidget%2CReplyWidgetPlain%7Cjquery.lengthLimit%7Cmediawiki.widgets.AbandonEditDialog%2CvisibleLengthLimit%7Coojs-ui.styles.icons-editing-core&skin=timeless&version=ztntf:1226:25
CommentController.js/CommentController.prototype.createReplyWidget/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=ext.centralNotice.geoIP%7Cext.centralauth.ForeignApi%7Cext.centralauth.centralautologin.clearcookie%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.echo.api%2Cinit%7Cext.eventLogging%2CnavigationTiming%2Cthanks%2CwikimediaEvents%7Cext.thanks.corethank%7Cext.uls.common%2Ccompactlinks%2Cinterface%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.specialPages%2Cwikibase%7Cjquery%2Cmoment%2Coojs%2Coojs-ui%2Coojs-ui-core%2Coojs-ui-toolbars%2Coojs-ui-widgets%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Cconfirmable%2Ci18n%2Cspinner%2CtextSelection%2Cui%7Cjquery.event.special.eachchange%7Cjquery.spinner.styles%7Cjquery.ui.suggester%7Cjquery.uls.data%7Cjquery.wikibase.entityselector%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cdiff%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Coojs-ui-toolbars.icons%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Cskins.timeless.js%7Cutil.inherit%7Cwikibase.ui.entitysearch&skin=timeless&version=ztntf:2957:10
mightThrow@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3489:29
Deferred/then/resolve/</process<@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3557:12
setTimeout handler*Deferred/then/resolve/<@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3602:16
fire@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3223:31
fireWith@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3353:7
fire@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3361:10
fire@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3223:31
fireWith@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3353:7
mightThrow@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3548:46
Deferred/then/resolve/</process<@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3557:12
setTimeout handler*Deferred/then/resolve/<@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3602:16
fire@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3223:31
fireWith@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3353:7
fire@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3361:10
fire@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3223:31
fireWith@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3353:7
Deferred/</deferred[tuple[0]]@https://www.wikidata.org/w/resources/lib/jquery/jquery.js?12e87:3698:36
mediawiki.base.js/mw.loader.using/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=ext.centralNotice.geoIP%7Cext.centralauth.ForeignApi%7Cext.centralauth.centralautologin.clearcookie%7Cext.checkUser.clientHints%7Cext.discussionTools.init%2Cminervaicons%7Cext.echo.api%2Cinit%7Cext.eventLogging%2CnavigationTiming%2Cthanks%2CwikimediaEvents%7Cext.thanks.corethank%7Cext.uls.common%2Ccompactlinks%2Cinterface%2Cpreferences%2Cwebfonts%7Cext.urlShortener.toolbar%7Cext.wikimediaEvents.specialPages%2Cwikibase%7Cjquery%2Cmoment%2Coojs%2Coojs-ui%2Coojs-ui-core%2Coojs-ui-toolbars%2Coojs-ui-widgets%2Coojs-ui-windows%2Crangefix%2Csite%7Cjquery.client%2Cconfirmable%2Ci18n%2Cspinner%2CtextSelection%2Cui%7Cjquery.event.special.eachchange%7Cjquery.spinner.styles%7Cjquery.ui.suggester%7Cjquery.uls.data%7Cjquery.wikibase.entityselector%7Cmediawiki.ForeignApi%2CString%2CTitle%2CUri%2Capi%2Cbase%2Ccldr%2Ccookie%2Cdiff%2Cexperiments%2CjqueryMsg%2Clanguage%2Cstorage%2Cuser%2Cutil%2CvisibleTimeout%7Cmediawiki.ForeignApi.core%7Cmediawiki.editfont.styles%7Cmediawiki.libs.pluralruleparser%7Cmediawiki.page.ready%7Cmediawiki.page.watch.ajax%7Coojs-ui-toolbars.icons%7Coojs-ui-widgets.icons%7Coojs-ui-windows.icons%7Cskins.timeless.js%7Cutil.inherit%7Cwikibase.ui.entitysearch&skin=timeless&version=ztntf:18052:26
doPropagation@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:756:12
Async*setAndPropagate@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:813:6
markModuleReady@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1226:20
nestedAddScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1233:6
execute/runScript/nestedAddScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1238:21
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1075:5
onComplete@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1036:5
EventHandlerNonNull*addScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1040:3
queueModuleScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1070:13
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1078:29
onComplete@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1036:5
EventHandlerNonNull*addScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1040:3
queueModuleScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1070:13
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1078:29
onComplete@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1036:5
EventHandlerNonNull*addScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1040:3
queueModuleScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1070:13
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1078:29
onComplete@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1036:5
EventHandlerNonNull*addScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1040:3
queueModuleScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1070:13
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1078:29
onComplete@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1036:5
EventHandlerNonNull*addScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1040:3
queueModuleScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1070:13
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1078:29
onComplete@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1036:5
EventHandlerNonNull*addScript@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1040:3
queueModuleScript/<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1070:13
queueModuleScript/</<@https://www.wikidata.org/w/load.php?debug=1&lang=hu&modules=startup&only=scripts&raw=1&skin=timeless:1078:29
```
==== Impact ====
Unable to use the reply tool or the new topic tool. It works when being logged out, so I’m not sure how many people are affected by this (but those who do, are quite severely).
==== Notes ====
* Tried to reply my 07:23 comment and to start a new topic on that page. The stack trace is from the reply attempt. (The error message is the same when trying to start a new topic; I didn’t compare the stack traces.)
* Happened logged-in, I was unable to reproduce it logged-out with the very same URL. Preferences that might be interesting (that I know are different from the defaults):
** UI language: Hungarian (`hu`)
** Skin: Timeless
** All DiscussionTools preferences are on, except for automatic topic subscriptions and source mode toolbar. Adding `&dtenable=1` to the URL while logged out didn’t make the issue reproducible.
* The URL contains `&debug=true`, but that’s only to get an easier-to-understand stack trace, it’s broken without `&debug=true` as well.