diff --git a/ghost/admin/lib/koenig-editor/addon/options/key-commands.js b/ghost/admin/lib/koenig-editor/addon/options/key-commands.js
index 644b7d7f89..f86a213fe6 100644
--- a/ghost/admin/lib/koenig-editor/addon/options/key-commands.js
+++ b/ghost/admin/lib/koenig-editor/addon/options/key-commands.js
@@ -178,7 +178,7 @@ export const DEFAULT_KEY_COMMANDS = [{
 
         // if the markup about to be deleted is a special format (code, strike)
         // then undo the text expansion to allow it to be extended
-        if (isCollapsed && marker) {
+        if (isCollapsed && marker && offset !== 0) {
             let specialMarkupTagNames = Object.keys(SPECIAL_MARKUPS);
             let hasReversed = false;
             specialMarkupTagNames.forEach((tagName) => {