https://bugs.kde.org/show_bug.cgi?id=460159

            Bug ID: 460159
           Summary: Tray icon color switches (back?) to black
    Classification: Plasma
           Product: plasmashell
           Version: master
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: System Tray
          Assignee: plasma-b...@kde.org
          Reporter: php4...@gmail.com
                CC: mate...@gmail.com
  Target Milestone: 1.0

Sorry if this is not the correct component, it's difficult to choose the right
one especially when the description in most cases is just a repetition of the
component name, or even less.

SUMMARY

On Manjaro Linux KDE Edition, I have Telegram Desktop installed via the AUR.

It has a tray icon which is white, as one would expect given it's on a dark
background.

However, after some time, seemingly randomly, it switches to a black icon,
which is almost invisible on that same dark background.

I initially assumed it was a bug in the application itself, or perhaps the AUR
package, but here's what the Telegram developers said:

> This icon recoloring happens on Plasma side, so this is likely to be a Plasma 
> bug

> As I said, Telegram is unaware of this recoloring, thus I don't imagine what 
> we can do here.

(to which I objected that it happens with no other icon besides theirs, and
interestingly they replied)

> It's the other way around I believe. The svg on hard disk is black and Plasma 
> applies its black magic to some of them to make them follow the color scheme. 
> It's a non-standard thing and no other DE does this.

STEPS TO REPRODUCE
1. install Telegram Desktop
2. run Telegram Desktop 
3. wait

OBSERVED RESULT

The tray icon should always remain visible

EXPECTED RESULT

Sometimes the tray icon, which is normally white, becomes black, and therefore
almost invisible on the dark background.


SOFTWARE/OS VERSIONS
Operating System: Manjaro Linux
KDE Plasma Version: 5.25.5
KDE Frameworks Version: 5.98.0
Qt Version: 5.15.6
Kernel Version: 5.15.71-1-MANJARO (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-1065G7 CPU @ 1.30GHz
Memory: 7.3 GiB of RAM
Graphics Processor: Mesa Intel® Iris® Plus Graphics
Manufacturer: LENOVO
Product Name: 81WE
System Version: IdeaPad 3 15IIL05

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