Gnome Shell - Do not let windows float to first or accross workspaces

Question

Currently I use gnome-shell and put all windows I do not need right now on the second workspace. Two screens are attached to the computer.

For some reason the windows float back from the second to the first workspace after a while. I believe that they come back if the main desktop is empty (first screen, first workspace is empty).

• Is there an option to prevent such behaviour?
• Can I force gnome-shell to keep everything where it is?
• (optional: Even if there is an whole empty workspace between)

Thanks in advance.

Answer 1

sudo apt-get install gnome-tweak-tool

And in shell disable the "Dynamic Workspaces".

Thanks to Lukas Knuth!