Last modified: 2014-02-10 14:50:04 UTC
A line like the following in any discussion or article in any wikipedia (checked en.wikipedia.org and de.wikipedia.org) will result in a center-aligned display of the result if preference MathJax is used: :<math>e=mc^2</math> Without leading colon the result is left-aligned (ok). In presence of normal text on same line the result is left-aligned (with expected indent) (ok). (So a trailing can serve as workaround) Seems to affect all Browsers on all OS. (Reports exist for linux/chrome, win-7-64/Firefox, Win-7-64/Internet-Explorer) Seems to have emerged "recently" (consistent to change on 2014 Feb. 6) "Life"-example: https://en.wikipedia.org/wiki/Wikipedia:Help_desk#Possible_bug_regarding_MathJax.3F
Just found Bug 61051. It's obviously the same. Sorry for bthering.
No problem :) *** This bug has been marked as a duplicate of bug 61051 ***