Markdown Rendering in cmux

When to Use

• Use when opening Markdown in cmux shows a blank pane or wrong layout.
• Use when you need to display a Markdown file in a stable cmux right pane.

The Problem

cmux markdown open defaults to spawning a brand-new pane every time, even with --direction right. The common "fix" — moving the new markdown surface into the existing right pane with move-surface — bugs out: the moved viewer renders BLANK. The surface keeps type=markdown and looks healthy, but shows nothing.

So you get stuck: either a stray extra pane, or a blank viewer after moving it.

The Rule

You have exactly two reliable options. Never move-surface a markdown viewer — that is the path that bugs.

Option A — Open it right on the first try