[BUG] Cannot focus() if editor is initialized empty

[braincore]

If you want to ask for support or request features, sponsor the project and contact me over email.

• [X] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
• [X] I have read the documentation and cannot find an answer.

Describe the bug If an editor is initialized with prop markdown="", then a call editor method focus() will fail to focus the editor.

Reproduction Sandbox: Simply click "Test focus"

Expected behavior Editor should be brought to focus with blinking cursor at start index.

Additional context This issue came up in the context of calling "focus()" from a mobile-web interface to bring up the virtual keyboard.

[braincore]

As a workaround, setMarkdown() can be called prior to calling focus(). However, setMarkdown() must have contents (at least temporarily)! To avoid any visual artifacts, one can do the following:

mdxEditorRef.current.setMarkdown("  ");
mdxEditorRef.current.setMarkdown("");