Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: fontconfig (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1832787

Title:
  fontconfig 2.12 in 18.04 causes firefox to freeze when launching
  chrome

Status in fontconfig package in Ubuntu:
  Confirmed

Bug description:
  fontconfig version: 2.12.6-0ubuntu2

  Related:

  https://askubuntu.com/questions/1076412/firefox-freezing-with-100-cpu-
  usage-for-30-seconds-when-launching-chromium

  https://bugzilla.mozilla.org/show_bug.cgi?id=1495900

  https://bugzilla.mozilla.org/show_bug.cgi?id=1411338

  
  Steps to reproduce:

  1) Launch firefox, open a few tabs

  2) Launch chrome

  3) Go back to firefox, and notice it starts being very slow, switching
  tabs do nothing (the content area remains blank).

  4) Backport fontconfig 2.13 from cosmic to bionic

  5) Try to reproduce 1-3, be happy because it is now working fine!

  
  I backported 2.13.0-5ubuntu3 from cosmic to bionic, if that helps. I don't 
have the right setup right now to do a bisect from upstream or from debian 
patches sadly.

  ~ lsb_release -a
  No LSB modules are available.
  Distributor ID:       Ubuntu
  Description:  Ubuntu 18.04.2 LTS
  Release:      18.04
  Codename:     bionic

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