1211130 - MathML appears to have the line-height set too large

Status: RESOLVED DUPLICATE of bug 1208776

(Core :: MathML, defect)

Description

[George Bateman]

Attachment: Screenshot from 2015-10-03 12-09-04.png

On Wikipedia and MDN, MathML takes up way too much vertical space, and matrices are similarly over-spaced. This has been going on for a little while.
On my machine, the Inspector shows:

line-height     > 93px
math > normal   mathml.css:16

at https://developer.mozilla.org/en-US/docs/Mozilla/MathML_Project/MathML_Torture_Test and 

line-height: 71px;
body > 1.5      mdn-min.css:1;
math > normal   mathml.css:16;

at https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/transform#Types_of_transform_definition.

Comment 1

[Frédéric Wang (:fredw)]

This is probably a duplicate of bug 1208776. STIX Math as well as some old OpenType MATH fonts do not set the USE_TYPO_METRICS flag, so they no longer work after bug 1170782. You must to upgrade your OpenType MATH to the latest version.

Comment 2

[George Bateman]

Thanks Frédéric; upgrading the font does fix the problem. Marking duplicate.