Index: src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css
===================================================================
--- src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css	(revision 56118)
+++ src/wp-content/themes/twentytwenty/assets/css/editor-style-block-rtl.css	(working copy)
@@ -951,6 +951,11 @@
 	text-transform: inherit;
 }
 
+.wp-block-buttons[style*="letter-spacing"] .wp-block-button__link,
+.wp-block-button[style*="letter-spacing"] .wp-block-button__link {
+	letter-spacing: inherit;
+}
+
 .editor-styles-wrapper .wp-block-button .wp-block-button__link.mce-content-body {
 	line-height: 1.1;
 }
Index: src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css
===================================================================
--- src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css	(revision 56118)
+++ src/wp-content/themes/twentytwenty/assets/css/editor-style-block.css	(working copy)
@@ -955,6 +955,11 @@
 	text-transform: inherit;
 }
 
+.wp-block-buttons[style*="letter-spacing"] .wp-block-button__link,
+.wp-block-button[style*="letter-spacing"] .wp-block-button__link {
+	letter-spacing: inherit;
+}
+
 .editor-styles-wrapper .wp-block-button .wp-block-button__link.mce-content-body {
 	line-height: 1.1;
 }
Index: src/wp-content/themes/twentytwenty/style-rtl.css
===================================================================
--- src/wp-content/themes/twentytwenty/style-rtl.css	(revision 56118)
+++ src/wp-content/themes/twentytwenty/style-rtl.css	(working copy)
@@ -3028,6 +3028,11 @@
 	text-transform: inherit;
 }
 
+.wp-block-buttons[style*="letter-spacing"] .wp-block-button__link,
+.wp-block-button[style*="letter-spacing"] .wp-block-button__link {
+	letter-spacing: inherit;
+}
+
 /* Block: Columns ---------------------------- */
 
 .wp-block-columns.alignfull,
Index: src/wp-content/themes/twentytwenty/style.css
===================================================================
--- src/wp-content/themes/twentytwenty/style.css	(revision 56118)
+++ src/wp-content/themes/twentytwenty/style.css	(working copy)
@@ -3048,6 +3048,11 @@
 	text-transform: inherit;
 }
 
+.wp-block-buttons[style*="letter-spacing"] .wp-block-button__link,
+.wp-block-button[style*="letter-spacing"] .wp-block-button__link {
+	letter-spacing: inherit;
+}
+
 /* Block: Columns ---------------------------- */
 
 .wp-block-columns.alignfull,