[Bug 2032906] [NEW] Load temporary addon not working

[chenzero]

Public bug reported:

Firefox version: 116.0.3  Ubuntu 22.04
the standard borderify addon is not working.
https://github.com/mdn/webextensions-examples/tree/main/borderify

Reproduce steps:
1. git clone borderify code
2. in Firefox, select menu "Add-ons and Themes" >> "Debug Add-ons" >>
   "Load Temporary Add-on...",
   then select the borderify manifest.json,
3. after install the addon, no any mozilla.org page is borderified.
   e.g: a page with url: https://www.mozilla.org/en-US/
4. further more, when refresh the tab https://www.mozilla.org/en-US/,
   in debug console, it will show a log "undefined: undefined",
   I am pretty sure that if no install the borderify addon, this log will not be printed.

Thanks!

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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Title:
  Load temporary addon not working

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