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Math: Format and block trigger an error in WP 6.9 #76182

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Math: Format and block trigger an error in WP 6.9#76182
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[Block] Math[Package] Format library/packages/format-library[Type] BugAn existing feature does not function as intended
@Mamaduka

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@Mamaduka
Mamaduka
opened on Mar 5, 2026

I noticed that when running Gutenberg trunk with WP 6.9, the Math format triggers an error. The same error occurs when inserting the math block.

Uncaught (in promise) TypeError: Failed to resolve module specifier '@wordpress/latex-to-mathml'

gutenberg/packages/format-library/src/math/index.js

Lines 133 to 137 in d419b56

useEffect( () => {
import( '@wordpress/latex-to-mathml' ).then( ( module ) => {
setLatexToMathML( () => module.default );
} );
}, [] );

gutenberg/packages/block-library/src/math/edit.js

Lines 35 to 51 in d419b56

useEffect( () => {
import( '@wordpress/latex-to-mathml' ).then( ( module ) => {
setLatexToMathML( () => module.default );
if ( initialLatex.current ) {
__unstableMarkNextChangeAsNotPersistent();
setAttributes( {
mathML: module.default( initialLatex.current, {
displayMode: true,
} ),
} );
}
} );
}, [
initialLatex,
setAttributes,
__unstableMarkNextChangeAsNotPersistent,
] );

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    [Block] Math[Package] Format library/packages/format-library[Type] BugAn existing feature does not function as intended

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