If the current Look and Feel is set to Windows, `JTextArea` that hosts the instructions uses a monospaced font ("Courier New"), yet the preferred size of the text component isn't updated after the font is changed.

This should be addressed somehow, otherwise sizing the instructions for Windows L&F needs additional adjustments, and the size of the frame becomes too wide in other L&Fs.

One the workarounds could be to force the font of `JTextField` to avoid monospaced font.

Yet JDK-8328164 proposes to add an option to use monospaced font in other L&Fs, so a generic solution is required.