Safari can not see "Select Background"

can some one let me know why safari can not see “Select Background” but Chrome or Firefox can see
Please see images attachment
how to enable Select Background on safari

Thank you

This is not supported by the browser, sorry.


thank you for quick reply

Hi @damencho can you please suggest where in the code you are handling this issue? Is there any check based on the browser? since other browsers like firefox and chrome show select background and safari hide this option from the overflow menu item.

Even if you enable the button that feature will not work there.
This is somewhere feature/toolbox