Description

Steps to reproduce:

Enable client-side MathJax in https://de.wikipedia.org/wiki/Special:Preferences#mw-prefsection-rendering
Enable "Vorschau sofort anzeigen" in https://de.wikipedia.org/wiki/Spezial:Einstellungen#mw-prefsection-editing
Go to a non-existing article, https://de.wikipedia.org/w/index.php?title=grlglkff&action=edit&redlink=1
Enter a formula in <math> tags, e.g. <math>x=2</math>.
Click "Preview". (Notice that the formula is rendered properly.)
Click "Preview" once again. (Notice that the formula is displayed as "$ x=2 $".)

	Subject	Repo	Branch	Lines +/-
	LivePreview: Use setTimeout to delay rendering of MathJax	mediawiki/extensions/Math	master	+3 -1

Status	Assigned	Task
Invalid	None	T41272 Bugs in "Live preview" feature (tracking)
Resolved	TheDJ	T90808 With MathJax and live preview enabled, math is displayed properly only the first time you click "preview" in a new article
Resolved	TheDJ	T90851 LivePreview fires wikipage.content hook before attaching content, which breaks some scripts

Event Timeline

pajz created this task.Feb 25 2015, 11:18 PM

pajz raised the priority of this task from to Needs Triage.

pajz updated the task description. (Show Details)

pajz added a project: Math.

pajz subscribed.

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptFeb 25 2015, 11:18 PM

confirmed.
Puts even more pressure on
T78046

by the way it works in MathML mode though
With MathML mode im referring to "MathML mit SVG- oder PNG-Rückgriff (empfohlen für moderne Browser und Barrierefreiheitswerkzeuge)" which sound much more complicated that it actually is.

It works the first time, and it works the second time when i force it to be 'late'.

Probably means that just as TMH, it doesn't really like to do rendering when the content is not yet attached to a parent. I think i'm going to change that in the livePreview module, or add an additional 'late' hook. because it's causing too much trouble...

TheDJ added a project: JavaScript.Feb 26 2015, 8:35 AM

TheDJ set Security to None.

TheDJ mentioned this in T38060: MathJax doesn't work in LivePreview.Feb 26 2015, 8:37 AM

TheDJ added a parent task: T41272: Bugs in "Live preview" feature (tracking).

TheDJ added a subtask: T90851: LivePreview fires wikipage.content hook before attaching content, which breaks some scripts.Feb 26 2015, 8:42 AM

Ricordisamoa subscribed.Feb 26 2015, 8:54 AM

He7d3r subscribed.Feb 26 2015, 1:04 PM

Change 193270 had a related patch set uploaded (by TheDJ):
LivePreview: Use setTimeout to delay rendering of MathJax

https://gerrit.wikimedia.org/r/193270

gerritbot added a project: Patch-For-Review.Feb 26 2015, 9:59 PM

Change 193270 merged by jenkins-bot:
LivePreview: Use setTimeout to delay rendering of MathJax

https://gerrit.wikimedia.org/r/193270