Bug Report

Steps to reproduce

1. Set a navbar loadnavbar: "_nav.md".
2. Set onlyCover: true

What is current behaviour

The navbar is missing on first navigation to the page.

What is the expected behaviour

The navbar should exist unless set to false.

Other relevant information

If you go to an internal page and and

• Bug does still occur when all/other plugins are disabled?

• Your OS: Windows 10 x64

• Node.js version: 14.17.5

• npm/yarn version: 6.14.14

• Browser version: Brave Version 1.33.106 Chromium: 96.0.4664.110 (Official Build) (64-bit)

• Docsify version: 4.12.1

• Docsify plugins: NA

Please create a reproducible sandbox

Sandbox link: https://codesandbox.io/s/elated-sound-6s1rq

Mention the docsify version in which this bug was not present (if any)