Many MATE users find that their “Other” menu gets very cluttered. Wine applications, Chrome apps, and anything else that uses a custom, local user menu ends up here. As a quick fix, I found that this can be alleviated with a few commands. Open a terminal (CTRL+ALT+T), then paste the following command in:
ln -s ~/.config/menus/applications-merged ~/.config/menus/mate-applications-merged
Hit enter, then either log out and log back in or restart your panel with mate-panel –replace. Note: this should be run in the ALT+F2 Run Application prompt, not the terminal.