Subject: Newer Chrome/Chromium maximized window stuck in front with MATE

From: Walid MOGHRABI <[email-masked]>
Date: Sat, 23 Sep 2017 15:40:20 +0200 (CEST)

Package: x2gothinclient 
Version: 4.1.1.0-0~1634~ubuntu16.04.1

With Chrome/Chromium browser >49, there is a strange behaviour that  is easily reproducible on a remote MATE session (this is happening too in nxagent nested session) :

- open a Chrome/Chromium browser and maximize its window
- open another application that is not maximized (let's say VLC), it should open in front of the maximized Chrome/Chromium window
- click on the Chrome/Chromium window, this should bring VLC behind
- try to Alt-Tab or click on the windows button in the windows list panel, this should bring it front but, the button in the panel flashes and the window stay stuck behind until you minimize Chrome/Chromium's window

In the .xsession-error log, it triggers these messages :

Window manager warning: 0x2800001 (doc:howto:) appears to be one of the offending windows with a timestamp of 4064013.  Working around...
Window manager warning: last_user_time (4064436) is greater than comparison timestamp (2931912784).  This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.  Trying to work around...
Window manager warning: 0x2800001 (doc:howto:) appears to be one of the offending windows with a timestamp of 4064436.  Working around...
Window manager warning: last_user_time (4065636) is greater than comparison timestamp (2931914121).  This most likely represents a buggy client sending inaccurate timestamps in messages such as _NET_ACTIVE_WINDOW.  Trying to work around...
Window manager warning: 0x2800001 (Eclipse do) appears to be one of the offending windows with a timestamp of 4065636.  Working around...

Regards,
Walid Moghrabi

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