TrayIcon not visible on Linux Mint 22 Cinnamon

[rastla]

Describe the bug

The TrayIcon icon doesn't show up on Linux Mint 22, but shows up on Windows 10. It just displays the broken/missing image icon:

To Reproduce

I created a new "Avalonia .NET App" via Rider (I installed the templates). Then I added an "Assets" folder and an icon and set it as AvaloniaResource. Then added this code:

<TrayIcon.Icons>
   <TrayIcons>
       <TrayIcon Icon="/Assets/headset_icon_dark.ico">
           <TrayIcon.Menu>
               <NativeMenu>
                   <NativeMenuItem Header="Click me"></NativeMenuItem>
                   <NativeMenuItem Header="Test"></NativeMenuItem>
                   <NativeMenuItemSeparator></NativeMenuItemSeparator>
                   <NativeMenuItem Header="Help"></NativeMenuItem>
               </NativeMenu>
           </TrayIcon.Menu>
       </TrayIcon>
   </TrayIcons>
</TrayIcon.Icons>

However, on my Linux Mint 22 Cinnamon, the Icon doesn't show up. The same code works for Windows 10 however...

Here is an example repo: https://github.com/rastla/AvaloniaTrayIconTest

Expected behavior

No response

Avalonia version

11.1.0

OS

Linux

Additional context

No response

[maxkatz6]

Can you try nightly builds? I think there were related fixes, cc @jmacato.

[rastla]

Same behaviour on 11.2.999-cibuild0051261-alpha unfortunately

[elestedt]

I have the same issue on Ubuntu 20.04.1 with i3 window manager and i3bar. Avalonia 11.1.3