Last modified: 2010-10-14 22:00:09 UTC
The API-function removeFromToolbar doesn't remove buttons: They are neither in div's nor do they have a "tool"-class, so the code target += ' div[rel=' + data.tool + '].tool'; can't find anything.
For the Wikieditor extension this bug got fixed in r74114. But it still exists in UsabilityInitiative/js/plugins/jquery.wikiEditor.toolbar.js
The fix was simple, it just needs to be backported...
r74788 (/branches/wmf/1.16wmf4/extensions/UsabilityInitiative/) and r74799 (/branches/REL1_16/extensions/UsabilityInitiative/) resolves this for deployment and release branches.