[Bug 861664]

[A-geek]

I didn't mean to confuse things. If I understand you correctly, I should
submit a new bug. But please note that I currently can't reproduce the
problem, as I have destroyed most of the original evidence (by running
installs and upgrades). Any suggestions for components etc., please?

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https://bugs.launchpad.net/bugs/861664

Title:
  Upgrading Firefox/Thunderbird when an add-on update is waiting to be
  installed hides the add-on

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