Garry and Linda Brettell,
Let's continue with updating the macOS software to the latest version. This can help resolve these types of issues with displaying menus. To compete this step, please follow the guidance below:
"Before installing new software, it's a good idea to back up your Mac.
- From the Apple menu in the corner of your screen:
- Choose System Settings. Then click General in the sidebar, and Software Update on the right.
- Or choose System Preferences. Then click Software Update.
2. If Software Update finds new software, click the Update Now or Upgrade Now button to install it.
3. Enter your administrator password, if asked. During installation, your Mac might restart, and you might see a progress bar or blank screen several times."
Update macOS on Mac - Apple Support
Take care.