The HTML editor removes a placeholder when it gains focus. This basically means that the Placeholder feature does not work with auto focus.
var ed = new Fit.Controls.Input();
ed.DesignMode(true, { /* editor config */ });
ed.Placeholder("Enter a short text here. You can use @ to mention people.");
ed.Render(document.body);
ed.Focused(true); // Removes placeholder - let's hope it did not contain important information
The HTML editor removes a placeholder when it gains focus. This basically means that the Placeholder feature does not work with auto focus.
Work around: Do not auto assign focus