Updating site editor presets

lib/block-supports/typography.php

@@ -378,6 +378,7 @@ function gutenberg_get_typography_font_size_value( $preset, $should_use_fluid_ty
 	// Font sizes.
 	$fluid_font_size_settings = isset( $preset['fluid'] ) ? $preset['fluid'] : null;
 
+	// A font size has explicitly bypassed fluid calculations.
 	if ( false === $fluid_font_size_settings ) {
 		return $preset['size'];
 	}

packages/edit-site/src/components/global-styles/test/typography-utils.js

@@ -15,6 +15,17 @@ describe( 'typography utils', () => {
 					typographySettings: undefined,
 					expected: '28px',
 				},
+				// Should return non-fluid value when fluid is `false`.
+				{
+					preset: {
+						size: '28px',
+						fluid: false,
+					},
+					typographySettings: {
+						fluid: true,
+					},
+					expected: '28px',
+				},
 				// Should return fluid value.
 				{
 					preset: {
@@ -38,6 +49,20 @@ describe( 'typography utils', () => {
 					expected:
 						'clamp(21px, 1.3125rem + ((1vw - 7.68px) * 2.524), 42px)',
 				},
+
+				// Should return default fluid values with null values.
+				{
+					preset: {
+						size: '28px',
+						fluid: null,
+					},
+					typographySettings: {
+						fluid: true,
+					},
+					expected:
+						'clamp(21px, 1.3125rem + ((1vw - 7.68px) * 2.524), 42px)',
+				},
+
 				// Should return size with invalid fluid units.
 				{
 					preset: {

packages/edit-site/src/components/global-styles/typography-utils.js

@@ -35,6 +35,11 @@ export function getTypographyFontSizeValue( preset, typographySettings ) {
 	const DEFAULT_SCALE_FACTOR = 1;
 
 	// Font sizes.
+	// A font size has explicitly bypassed fluid calculations.
+	if ( false === preset?.fluid ) {
+		return defaultSize;
+	}
+
 	const fluidFontSizeSettings = preset?.fluid || {};
 
 	// Try to grab explicit min and max fluid font sizes.