You need to perform just 3 simple steps to keep the menu bar from disappearing on macOS Mojave. Follow the below steps:
Keep Menu Bar Always Visible on macOS Mojave
Do the following setting on macOS Mojave to keep the menu bar visible all the time. The setting will prevent the menu bar to hide automatically.
- On macOS Mojave, click on the System Preferences, the System Preferences window will open.
- Then click on the General setting icon.
- Then on the General window, uncheck the "Automatically hide and show the menu bar" to prevent menu bar from disappearing on macOS Mojave.
The setting is now changed and the menu bar will not disappear anymore on macOS Mojave.