[FIXED] How do I toggle cell output in JupyterLab Version 3.4.4?

Issue

In older versions I could press Esc+o and this still works in "classic notebook", but does not carry over to modern mode.

How do I get this behavior in the rest of the application?

The "toggle cell output collapsed" option is gone.

Solution

There is a blue bar next to the cell output. When you click it will hide the cell output.

There is also a command "Collapse All Outputs" which you can access from the Command Palette. You can assign this command to a new shortcut in Settings Editor.

Answered By - krassowski