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The preview appears to be eating the first and last dollarsigns in double dollarsigned expressions hence causing displaystyle expressions to be ignored, e.g. see here

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  • $\begingroup$ sorry, I'm not following -- I don't know MathJax very well. I don't see any meaningful difference between your post, pasted in as a preview, and the final rendered post? Note that we auto-escape everything between $..$ now though, so it should be untouched. $\endgroup$ – Jeff Atwood Nov 13 '10 at 19:51
  • $\begingroup$ Even i have noticed this problem $\endgroup$ – Chandru1 Nov 13 '10 at 20:18
  • $\begingroup$ @Jeff: It's not as glaringly obvious now since that post has been subsequently edited. But all double-dollar displaystyled LaTeX forms are now left-justified instead of centered in the preview pane. $\endgroup$ – Bill Dubuque Nov 13 '10 at 21:16
  • $\begingroup$ @Jeff Atwood: I posted an example as an answer to this report. $\endgroup$ – Tsuyoshi Ito Nov 13 '10 at 22:11
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This has been fixed. Was a consequence of some... uniqueness in javascript regular expressions.

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Example: The following equation is enclosed as $$…$$ and therefore centered in the actual answer.

$$x=1.$$

But in preview it is left-justified.

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  • $\begingroup$ Yes, that's what I'm referring to. Thanks Tsuyoshi. $\endgroup$ – Bill Dubuque Nov 13 '10 at 22:14

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