Steps to reproduce:

1. Open a Unity URP project
2. Create a new Shader Graph asset in your assets via Create > Shader Graph > URP > Lit Shader Graph
3. Open your new Shader Graph asset by double clicking on it
4. Create a node with a Preview (e.g. Channel Mixer) by pressing spacebar to open the Create Node menu and double clicking on the node
5. Ensure that the created node is not selected
6. Use the shortcut Ctrl + T to Collapse or Expand All Previews

Actual results: Nothing happens

Expected results: The preview on the created node is either collapsed or expanded, dependent on its previous state.

Reproducible with versions: 

• 6000.0.11f1
• 6000.0.0b1

Not reproducible with versions: -

Can’t test with versions: 

• 2023.2.20f1 (shortcut not added)
• 2022.3.36f1 (shortcut not added)
• 2021.3.40f1 (shortcut not added)

Tested on (OS): Windows 11

Notes:

• The 'Collapse All Previews' and 'Expand All Previews' options in the context menu work. It is just the keyboard shortcut that is not functional.
• The same keyboard shortcut (Ctrl + T) is used to expand and collapse a preview of selected nodes. This works. It is specifically when you want to expand or collapse all previews (when you have no specific node selected) when it doesn't work.