Change Details

**List of steps to reproduce** (step by step, including full links if applicable): * Enable 2017 wikitext editor * Edit any CSS/JS page **What happens?**: CodeEditor looks broken, as in the screenshot in the last section. **What should have happened instead?**: CodeEditor should have only appeared with a "Preview" button in the top right? **Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.**: {F35131168} Browser: Opera GX LVL 3 (core: 85.0.4341.72)

**List of steps to reproduce** (step by step, including full links if applicable): * Enable realtime preview * Edit any CSS/JS page **What happens?**: CodeEditor looks broken, as in the screenshot in the last section. **What should have happened instead?**: CodeEditor should have only appeared with a "Preview" button in the top right? **Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.**: {F35131168} Browser: Opera GX LVL 3 (core: 85.0.4341.72)

**List of steps to reproduce** (step by step, including full links if applicable): * Enable 2017 wikitext editorrealtime preview * Edit any CSS/JS page **What happens?**: CodeEditor looks broken, as in the screenshot in the last section. **What should have happened instead?**: CodeEditor should have only appeared with a "Preview" button in the top right? **Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.**: {F35131168} Browser: Opera GX LVL 3 (core: 85.0.4341.72)