Bug Report

Steps to reproduce

1. Add to $window.docsify: logo: "https://raw.githubusercontent.com/Zaeems/iMS-User-Scripts/main/iMS_Dark_Mode.svg", and coverpage: true,
2. Add to custom.css: .app-name-link img { height: 3rem; }
3. Ensure _coverpage.md exists and contains something, example: <!-- _coverpage.md --> Test
4. Serve the site, then scroll below the coverpage

What is current behaviour

Occasionally, the sidebar logo will move really quicky for less than a second.

watch.the.logo.mp4

What is the expected behaviour

Sidebar logo to remain in place.

Other relevant information

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

• Your OS: Windows 10 64-bit

• Node.js version: v16.14.1

• npm/yarn version: 8.5.0

• Browser version: Opera GX LVL3 (core: 85.0.4341.72)

• Docsify version: 4.12.2

• Docsify plugins: zoom-image, search, darklight-theme

Please create a reproducible sandbox

I can't get the sandbox to work.

https://zaeems.github.io/#/

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