autoCollapse set to true, is not working

[AP-monkey]

Hello, I wanted the sidebar to open only 1 level at a time and close the other non active ones. I followed the documentation and applied the setting via theme.config.js file. But I keep getting an error in the console Unrecognized key(s) in object: 'autoCollapse'. Path: "sidebar. My defaultMenuCollapseLevel setting is set to 1.

It seems to work only page refresh, but not otherwise.

Thanks