Issue Details

• Electron Version:
  • 11.0.3
• Operating System:
  • Windows 10
• Last Known Working Electron version:

Expected Behavior

An invalid entry to the JumpList does not cause other entries to disappear.

Actual Behavior

A single invalid JumpList entry makes all other entries disappear.

To Reproduce

The following was generated by headless-recorder

await page.waitForSelector('body > #app > .Connect\(Layout\)-root-1 > .Connect\(Layout\)-content-2 > .Dashboard-container-45')

But since \ already means escape next char in javascript the \ also need escaping:

await page.waitForSelector('body > #app > .Connect\\(Layout\\)-root-1 > .Connect\\(Layout\\)-content-2 > .Dashboard

Is your feature request related to a problem? Please describe.
Currently, there are services that secure website from automation tools like ferret. Some of them send 405 in response to the DOCUMENT function call that make a ferret script fail with an error even though a page is available (not the original page, but usually a page with the captcha).

Describe the solution you'd like
It

Describe the bug
When exporting annotation with Flashcard, the JSON line is undefined

    },
    undefined,
    {

To Reproduce
Steps to reproduce the behavior:

1. Annotate a line of text
2. Add a Flashcard with data on back and front
3. Export annotation as JSON
4. Search "undefined" you should get to that badly exported entry

Expected behavior

Fla

Describe the bug
From Issue #6441.
In the "Info & Help" page, a large fox icon occupies enough vertical space that the "Help" portion of "Info & Help" is pushed off the bottom & requires scrolling.

Current:

Better:
![image](https://user-images.githubusercontent.com/563406/