That’s because you’re focused on the chat input field, which can block some other keybinds. We will work on handling this better. In the meantime, you can try pressing the tab key once to unfocus from the input field and then use your other keybinds.
okay yeah can confirm this works on mac! thanks @daaniyaan
For future reference, the command name in Keyboard shortcuts is “View: Toggle Secondary Side Bar Visibility”.