Comment 0 for bug 1874483

lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal

apt-cache policy telegram-desktop
telegram-desktop:
  Installed: 2.0.1+ds-1build1
  Candidate: 2.0.1+ds-1build1
  Version table:
 *** 2.0.1+ds-1build1 500
        500 http://us.archive.ubuntu.com/ubuntu devel/universe amd64 Packages
        100 /var/lib/dpkg/status

DE: KDE 5.68.0 / Plasma 5.18.4
WM: KWin
GTK Theme: Breeze [GTK2/3]
Icon Theme: breeze

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Hello.
The problem is that when the KDE theme is on the Dark, the icons on all apps turn white, and the telegram turns white.
But if the KDE theme isn't dark, but just a dark panel, all icons will turn white except Telegram!
In this category:
/usr/share/icons/breeze-dark/status/22/
/usr/share/icons/breeze-dark/status/24/
/usr/share/icons/breeze/status/22/
/usr/share/icons/breeze/status/24/

For the Dark panel directory, the Telegram icon is white
For the light panel directory, the Telegram icon is black

But it doesn't matter if I choose Dark or Light. In any case, it shows black.
I darken the icon theme and the black telegram icon remains
Only if the entire system theme is dark, the Telegram icon will be displayed in white.

I even replaced the Telegram icon with a system icon for testing, and again it is displayed in black on the Dark Panel and is not white!