https://bugzilla.wikimedia.org/show_bug.cgi?id=40042

Derk-Jan Hartman <[email protected]> changed:

           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |NEW
                 CC|                            |[email protected]
     Ever Confirmed|0                           |1

--- Comment #1 from Derk-Jan Hartman <[email protected]> 2012-10-22 
17:02:51 UTC ---
This is due to the fact that there is no good way to universally format math
and chem formulas yet.

The problem comes from the fact of having to use a subscript and a superscript
at the SAME time, which is not something that is supported in HTML. If both are
present, a 'trick' is used and the PDF renderer (rightfully) doesn't understand
the trick. Problems like these won't ever be fully solved until MathML has
further matured.

Idea. use an 'alt' text if the template needs to show both sup and sub, and let
the PDF rendere fallback to the alt text instead of just 'stripping' the html
out of the rendering.

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