I changed alt+tab to switch-windows as shown in this answer: How to prevent Gnome-shell's Alt+Tab from grouping windows from similar apps?
Now I have the problem that if I press alt+tab it shows me all open windows and not only windows of the current workspace. I thought "current-workspace-only" in "/org/gnome/shell/window-switcher" would prevent this behaviour, but it doesn't.
How can I prevent "switch-windows" from switching to other workspaces?
