How is it shown in a plasma taskmanager?

Created attachment 117565 [details]
Taskmanager

The desktop file of opentoonz is faulty, do you need help fixing it?

Do you mean .desktop file?

(In reply to dS810 from comment #4)
> Do you mean .desktop file?

yes

here is the content of .desktop file

[Desktop Entry]
Version=1.0
Name=OpenToonz
Comment=2D animation software
Exec=opentoonz %f
Icon=opentoonz
Terminal=false
Type=Application
StartupNotify=true
Categories=Graphics;

(In reply to dS810 from comment #6)
> here is the content of .desktop file
> 
> [Desktop Entry]
> Version=1.0
> Name=OpenToonz
> Comment=2D animation software
> Exec=opentoonz %f
> Icon=opentoonz
> Terminal=false
> Type=Application
> StartupNotify=true
> Categories=Graphics;


You can try to add in the desktop file the following based on what was missing in my system:

StartupWMClass=OpenToonz_1.1


you can use program xprop in order to indicate what is the correct string to set for StartupWMClass, from xprop is the string called:

WM_CLASS(STRING) = "OpenToonz_1.1", "OpenToonz_1.1"

thanks for help!