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Work around issue with Safari 26 not processing math inside otherwise empty containers with overflow: auto. (mathjax/MathJax#3579) #1511

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Merged
dpvc merged 1 commit into from
Jun 18, 2026
+15 −0
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Work around issue with Safari 26 not processing math inside otherwise empty containers with overflow: auto. (mathjax/MathJax#3579) #1511

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15 changes: 15 additions & 0 deletions ts/ui/lazy/LazyHandler.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ import { HTMLHandler } from '../../handlers/html/HTMLHandler.js';
import { SpeechMathItem } from '../../a11y/speech.js';
import { handleRetriesFor } from '../../util/Retries.js';
import { OptionList } from '../../util/Options.js';
import { StyleJson } from '../../util/StyleJson.js';

/**
* Add the needed function to the window object.
Expand Down Expand Up @@ -388,6 +389,19 @@ export function LazyMathDocumentMixin<
*/
protected lazySet: LazySet = new Set();

/**
* Extra styles for lazy nodes.
*/
public static lazyStyles: StyleJson = {
'mjx-lazy': {
//
// Needed for Safari 26 when the math appears inside an othewise empty
// node with overflow: auto. See issue #3579.
//
display: 'inline-block',
},
};

/**
* Augment the MathItem class used for this MathDocument,
* then create the intersection observer and lazy list,
Expand All @@ -400,6 +414,7 @@ export function LazyMathDocumentMixin<
*/
constructor(...args: any[]) {
super(...args);
this.addStyles((this.constructor as typeof BaseClass).lazyStyles);
//
// Use the LazyMathItem for math items
//
Expand Down
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