[Bug 45132] Some stock icons missing when not using the Human theme

[Bernat Tallaferro]

Public bug reported:

I've just updated to ubuntu-artwork 20 and observed that when not using
the Human theme, some icons are missing completely, that is, not even
the GNOME stock icons are shown.

This seems to happen for the following entries in the "Add to Panel"
dialog:

* Connect to Server...
* Main Menu
* Menu Bar

However, when using either the tango, tangerine or human icon themes,
the icons are displayed correctly.

Steps to reproduce:

1.- Go to System>Preferences>Theme

2.- Select the custom theme and press the "Theme Details" button.

3.- Select the "Icons tab" and choose e.g. the Crux icon theme.

4.- Right-click on the Gnome panel and select "Add to Panel..."

5.- Scroll down to Utilities and observe that the "Main Menu" and "Menu
Bar" entries have got no icon at all. With some other icon themes, the
"Connect to Server" icon is also missing.

Could that have something to do with
https://launchpad.net/distros/ubuntu/+source/ubuntu-artwork/+bug/45124?

** Affects: ubuntu-artwork (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

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Some stock icons missing when not using the Human theme
https://launchpad.net/bugs/45132