MathML-mania cripples Wikipedia mathematics, again

Last week, the Wikimedia developers switched mathematics rendering on the English-language Wikipedia to a new system, so badly broken that it cannot correctly render the inequivalence relation symbol \(\not\equiv\), with formulas often partially obscured by other content such as images preventing them from being viewed, and intermittently not showing some formulas in footnote mouseovers at all. The changeover does not appear to have fixed old and long-unfixed bugs such as the inability to use mathematical formulas in image captions (if you do, clicking on the image will give you an expanded view with a broken caption). They did this without any large scale testing, without the ability for individuals to use their viewing preferences to restore the old system, with essentially no consultation with the mathematics editors on Wikipedia, without advance notice to Wikipedia, and over the repeated strong objections of the mathematics editors who despite all this found out ahead of time that…

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