Bug 300002 – Uncaught Exception: TypeError: E.isInsertionCaretInside is not a function

• Component: Web Inspector
• Status: RESOLVED DUPLICATE

Uncaught Exception in Web Inspector.

Steps to Reproduce:
1. What were you doing? Include setup or other preparations to reproduce the exception.
2. Include explicit, accurate, and minimal steps taken. Do not include extraneous or irrelevant steps.
3. What did you expect to have happen? What actually happened?

Uncaught Exceptions:
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 - TypeError: E.isInsertionCaretInside is not a function (at manifest-yr1khc1r.js:85:110934)
    WI._focusChanged @ manifest-yr1khc1r.js:85:110934
    TextareaInput.prototype.focus @ codemirror.js:8770:25
    focus @ codemirror.js:7634:58
    focus @ manifest-yr1khc1r.js:51:1250154
    attached @ manifest-yr1khc1r.js:51:858431
    _didMoveToParent @ manifest-yr1khc1r.js:51:410937
    insertSubviewBefore @ manifest-yr1khc1r.js:51:409166
    addSubview @ manifest-yr1khc1r.js:51:408414
    _showEntry @ manifest-yr1khc1r.js:51:1263590
    showBackForwardEntryForIndex @ manifest-yr1khc1r.js:51:1258843
    showContentView @ manifest-yr1khc1r.js:51:1258357
    _tabBarItemSelected @ manifest-yr1khc1r.js:51:572875
    A @ manifest-yr1khc1r.js:37:11388
    dispatchEventToListeners @ manifest-yr1khc1r.js:37:11428
    selectTabBarItem @ manifest-yr1khc1r.js:51:554098
    set selectedTabBarItem @ manifest-yr1khc1r.js:51:553582
    WI.contentLoaded @ manifest-yr1khc1r.js:85:88809
    ? @ 
-----------------------

Notes:
Inspected URL:        (unknown)
Loading completed:    false
Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:143.0) Gecko/20100101 Firefox/143.0

[Razvan Caliman]

*** This bug has been marked as a duplicate of bug 284114 ***