[Bug 1889517] [NEW] url- and searchbar not working after upgrade to 79.0

[Marlin]

Public bug reported:

I've upgraded my packages and now firefox is bare usable:
- Autocomplete in URL bar does not work
- Top sites and highlights are blank on launch page
- Search bar does not work

Installed Extensions:
GNOME shell integration
Google Analytics Opt-out
NoScript
uBlock origin

Problem is also present in safe mode.

Ubuntu 20.04.1 LTS on 5.4.0-42-generic

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

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https://bugs.launchpad.net/bugs/1889517

Title:
  url- and searchbar not working after upgrade to 79.0

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