ok, but now, after changed "System Sttings ">“Workspace appearance and behavior” > “General” > “DeskTop Effects”, it’s different
No. Activities are independent of your virtual desktops. Each activity has in fact its own set of virtual desktops.
Click on the “3 dots” symbol on your panel to switch between activities.
So it was running in a different activity apparently.
No. Other activities are empty. I’ve never used before.
Hm?
What did you really do now to have it appear?
One sentence before you said it appeared when you changed the taskmanager’s settings, now you say it appeared after you disabled desktop effects (IIUYC)?
What does that mean. I don’t understand a word.
Sorry.
I disabled this:
"System Sttings ">“Workspace appearance and behavior” > “DeskTop Effects” > “General” > “Simple effect setup”
After the ThunderBirb appears, but estrange appearance, its cover all the screen, and the task manager disappear, I can turn off Thundbird only in your menu bar.
What happens if you enable desktop effects again?
If I try to able the “Simple effect setup”, appear a error message telling "Could not load 20 effects of the desktop "
What settings did you really change?
Only this:
I disable two check-box in:
"System Sttings ">“Workspace appearance and behavior” > “DeskTop Effects” > “general” > “Simple effect setup”
If you disable “Desktop Effects”, it is clear that desktop effects do not work any longer, no?
I mean: If I able the “Effects”, there was an error, so it should not have worked.