Keyboard shortcut for `open_document_embedded_from_current_path' does not work

When I press Ctrl-Shift-o to open documents in the current directory it does not work. The keyboard shortcut for this command is found in the keys file to be <C-S-o>. When I changed the o to capital O i.e. from <C-S-o> to <C-S-O> in the keys_user file, the shortcut works perfectly. Could you please look into this issue or maybe update the default keybinding to <C-S-O>?

I am using this AppImage in Linux mint 22.3 which is based on Ubuntu 24.04 LTS. Thank you.