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Created attachment 1376465 [details]
washed out icons

Description of problem:
After a fresh installation of RHEL 7.5 Beta CSB, the icons in the top right corner (systray) are washed out. You can get them sharp by moving your mouse over the icons.

Version-Release number of selected component (if applicable):
gnome-classic-session-3.26.2-1.el7.noarch

How reproducible:
Log in with a user in Gnome classic mode

Created attachment 1376466 [details]
non washed out with mouse over icons

This sounds like this upstream issue:
https://gitlab.gnome.org/GNOME/gnome-shell-extensions/issues/39

There's a proposed fix on the aforementioned upstream issue, so marking as dev-ack.

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/RHBA-2018:0770