Shortcode Reverted to Code in Sidebar

had the shortcode as a widget in my sidebar

in a textwidget?

if so, did you enable shortcodes in textwidgets, by adding this to functions.php of your theme?
add_filter('widget_text', 'do_shortcode');

what changes have you made since it was working last time?

what theme are you using?

I had to reset something last week and I guess I wiped out that filter. Thank you!