Cant see my open programs in the task bar.

Just intalled Bazzite, installed all my other apps too. Messed around with the task bar kinda exploring all the settings and now i realise i cant see which apps are open. IDK how this happenned what i removed or clicked.. Please help ?

see for exemple in the picture it says i have a tab for firefox, yet i dont see it anywhere on my taskbar and have to alt+tab to open it.