libmutter segfaults in meta_workspace_index

[Alex Kurilo]

libmutter segfaults and causes gnome-shell to crash.
The only reliable way to reproduce it that I know is using autocomplete feature in any JetBrains IDE.

More details are available here: https://bugs.launchpad.net/gala/+bug/1083480
Here is a creencast of the same issue (with gala, not gnome-shell, but still): https://bugs.launchpad.net/gala/+bug/1082878/comments/3

Apport crash report is attached.

I was able to reproduce it using either libmutter0 3.6.2-0ubuntu0.1 in Ubuntu 12.10 and 3.6.3-0ubuntu2 in 13.04.

[Launchpad Janitor (janitor)]

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

[Jeremy Bícha (jbicha)]

Thank you for reporting this bug to Ubuntu. 13.04 reached End of Life in 2014. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases

Please upgrade to Ubuntu 16.04 LTS and re-test. If the bug is still reproducible, increase the verbosity of the steps to recreate it so we can try again.

Do feel free to report any other bugs you may find.