I just installed Manjaro 20.1.2 with KDE. It starts up into KDE fine, but when I try to open any program (Konsole, Firefox, Dolphin, …) a new small icon on the bar at the bottom of the screen shows up for that program, indicating it is open, but there is no window for me to interact with. Does anyone have an idea about what might be causing this?
If this is a new install and no changes, could KDE be indexing?
I don’t use KDE Search, so it’s one of the first things I turn off.
KDE has a system activity monitor (ctrl-esc). Columns are clickable/sortable.
For an advanced user, they could use a tty terminal (ctrl-alt-f1 thru f7) and type top or htop.
If you try KDE again, the first two settings I review: “Search” and “User Feedback”.