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Description of problem:
The customer has sent a merge request to upstream. 

Characters of window title bar garbled (!227) · Merge Requests · GNOME / mutter · GitLab
https://gitlab.gnome.org/GNOME/mutter/merge_requests/227

Please see above for details.

Version-Release number of selected component (if applicable):
mutter-3.26.2-13.el7
mutter-3.22.3-11.el7

How reproducible:
Always

Steps to Reproduce:
See https://gitlab.gnome.org/GNOME/mutter/merge_requests/227

Actual results:
Window title bar with garbled characters

Expected results:
Window title bar without garbled characters

Additional info:
This issue does not reproduce in mutter-3.14.4-31.el7.x86_64, so it appears to be a regression.

Created attachment 1604075 [details]
Japanese title after bug fix

TEST SETUP
Distro: RHEL 7.7 Released
Component version: mutter-3.28.3-10.el7


TEST PROCEDURE
1. Install RHEL 7.7 Workstation Released on a VM.
2. Download and install the latest version of mutter for RHEL7 from Brew server.
   mutter-3.28.3-14.el7
3. Reproduce the bug by following the steps:
   https://gitlab.gnome.org/GNOME/mutter/merge_requests/227
The bug does NOT appear.


RESULT
Upgrading component: mutter
    from: 3.28.3-4.el7
      to: 3.28.3-14.el7
has fixed the bug.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2020:1021