[Bug 1387439] [NEW] achiving large numbers of messages is slow and leaves context menu on-screen

[John Pye]

Public bug reported:

Hi there

When achiving large numbers of messages from my Inbox, Thunderbird
leaves the context menu on-screen as an artifact. It's very annoying
because thunderbird won't respond, but the context menu still stays in
front of other windows when I switch to another program, eg LibreOffice
as shown in the attached screenshot.

Perhaps this is a problem with Unity (I am using Unity 2D here), but
more likely I think it is a problem with Mozilla running this archive
operation in an inefficient 'foreground' way, when really it should be a
nicely backgrounded task (eg using the Activity Manager).

Cheers
JP

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

** Attachment added: "screenshot showing the thunderbird context menu still focussed after switching to LibreOffice"
   https://bugs.launchpad.net/bugs/1387439/+attachment/4248718/+files/thunderbird-big-archive-job.png

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Title:
  achiving large numbers of messages is slow and leaves context menu on-
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