[Xfce-bugs] [Bug 16245] New: Chromium and derivatives icon not showing in tray when background running is enabled

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=16245

            Bug ID: 16245
           Summary: Chromium and derivatives icon not showing in tray when
                    background running is enabled
    Classification: Xfce Core
           Product: Xfce4-panel
           Version: Unspecified
          Hardware: PC (x86_64)
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Medium
         Component: Notification Area
          Assignee: xfce-bugs at xfce.org
          Reporter: federicosantamorena at gmail.com
  Target Milestone: Panel 4.14

Created attachment 9292
  --> https://bugzilla.xfce.org/attachment.cgi?id=9292&action=edit
example of Chrome and Vivaldi appearing on Cinnamon

When installing an extension like:

https://chrome.google.com/webstore/detail/lightning-reopen/ahphokgmcecbjeipkfkamcdmemghkaph

(or Pushbullet and enabling in its settings to run in background or any other
extension with the background permission)

and then enabling:

Settings => System => Continue running background apps when Google Chrome is
closed 

Chrome/Chromium/Vivaldi etc shows a tray icon 

But this does not work on XFCE, at least on Debian 10 (testing) and Arch with
latest XFCE updates.
Didn't try Xubuntu.

On KDE, Cinnamon, Deepin etc the tray icon appears.

Also I want to point out that HTML5 Web Notifications do not work when combined
with background behavior, the default behavior should be that when enabling
them and closing the browser, XFCE should still show web notifications because
the tray icon """keeps the browser alive""".
So if this gets fixed, then using a website like this:
https://www.bennish.net/web-notifications.html
And then clicking "Shows in 5s" and then closing the browser, the tray icon
should stay alive and after 5 seconds a notification should still appear.
(at least this is the default behavior on Windows from what I remember,
otherwise it would be pointless to keep the browser running in the background
if web notifications do not show up)

I've seen this behavior I believe since the beginning of the year so for now I
will leave the Version as Unspecified.
After digging a bit I found only abandoned similar issues like:

https://askubuntu.com/questions/910531/chromium-browser-xfce-panel-indicator
But I tried Google Chrome and the tray icon does not show on Debian 10
(testing) with "Continue running background apps when Google Chrome is closed "
enabled and Lightning Reopen installed.

And decided to file this report.

I tried various applications but it seems that ONLY Chromium derivatives do not
appear ONLY on XFCE, so it's a strange combination of XFCE+Chromium

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